Do Salt Lamps Work?

And they are

yeah lmao

@@vapervop did you read the comment?

@@vapervop yes

@@vapervop yes but I never knew that they were even claimed to do that.

I needed that laugh. Thanks.

LMAO holy I laughed way too hard at this

Now I know how you like to spend your evenings at home.

lol

Hot

I was wondering how the effect would compare if you put a small fountain of water in your home or office, or even a recording of waterfalls or ocean waves. Also if the ionized air is creating a breeze, has that been tested against a gentle fan for creating the impression of fresh air?

@@grutarg2938 just watching a small fountain would calm me

@@jadedesormeaux6820 Me too! But now I want to know the science of why that works.

Also, most of us experience them only on holiday XD

It's actually because of that that we humans developed that association with serotonin through evolution.

i noticed that too, pretty smart of him to word it like that

Alternative perspective is rigor. Rigor and humility may be associated but in this case I tend to focus on the rigor more. I personally practice rigor a lot, on a daily basis, and in casual conversations, rigor may not always be desired. In communication, it seems we oftentimes face a tradeoff between the accuracy of the statements and the cognitive load on the humans.

@@xj-vn4eo I don't think I've heard (or read) the word 'rigor' in the context that you're using it. What do you mean when you say you practice rigor a lot?

@@LochNessHamster Hmm. I mean something like the response you liked, saying stuff in a more rigorous and precise manner.

I noticed that too. Well-chosen words.

Think about how many other people have walked by that lamp, thinking the very same thing... then pulled an Ariana-Grande-not-so-secret-lick in that VERY same spot that YOU just licked👅🤢🤭😉

@@jade8568_VR If its in my room and I live alone whos going to be licking my lamp other than me?

@@parkerbear849 ... i don’t think you want to know

that's the bonus! ;)

Nonono you use it with a cheese shredder if you want to season a late night snack in bed

Adam Neely (A music channel) also does this, asks a question in the title, and promptly answers it in the thumbnail and honestly, Its refreshing to see that from educational channels

Yes, and sometimes there is as much (or more) knowledge in the process than the result. Your impulse is all good.

yeahhhhh lmao
it's kinda like an impulse of "why though?"
especially since i'm a person who doesn't just spontaneously agree with someone's statements

The light from my salt lamp is now the only thing I have left . . . but I feel mellow staring at it in a darkened room.

Ditto

hat's the point of science! If you ever hear anyone say something along the lines of "I absolutely know," they're either lying or trying to sell you something.

​@@erich930Typically I would use something more along the lines of "The evidence resulting from this experiment supports the claim/argument that...," rather than a statement of personal belief in the claim.

Many scientists do this as a faux humility though. Then under the pressure of the pandemic most of them went crazy for masks and vaccine mandates at Caltech, which was the opposite of being humble or scientific.

@@commscan314 It's unfortunate that doesn't work in day-to-day conversations with, say, your parents, friends or family. People that aren't scientific minded get bored, or don't internalize it if you say it that way.
See Veritasium's video about anecdotes vs data (idk the current title, but if you look for "anecdotes veritasium" you'll find it)
A compromise I like to use is to reply with "yes, most likely" or "it does seem that way" then add an anecdote. Normal people take that more seriously this way.

That's literally how science works, genius. I know your democrat friends taught you the concept of "The Science is Settled", but no scientific theory is ever "settled". This language is not only normal, it's how it's supposed to be.

whoa, didn't expect to see you here man.

Veritasium lost some science logic points there xdddd

the epic flipnote man of my childhood

Yeah, I was confused by the title since I thought salt lamps were just decorative lamps, how could they possibly not work.

Veritasium lost. Period. (.)

That should tell you this video isn’t worth watching

Haha, maybe, but cool that some want to give an answer, im kind of the same type of person lol

"Suck it Trent"

He's that friend you need to tell
"dude drop it already!"
*makes a 3 million views video*

@Benjamin gammer The interesting part was that he got all the scientists to pretend like it was an actual thing to investigate, and not the patent nonsense it really is.

He tested this thumbnail against clickbait. He made a video about it

It’s most likely not ions.

But if they are periodically turned on and off and then see a difference in performance, it would prove it, like they did

@@simoringenfreitag5603not necessarily because turning off the purifier would also change the airflow back to how it was.

@@simoringenfreitag5603 Yeah but what if the air purifier produced a sweet smell like the one tested in this video? That would also obviously impact productivity. The point was a lot of the studies, including that one, were poor quality. That doesn't make them useless, but it does mean the only real conclusion you can draw from them is "it would be good to repeat this study but do some things differently".

To be fair, this might actually work on account of access to nature. A lot of people get depressed simply because they don't go outside enough.

that would seem like a magical place.
a waterfall next to the ocean.
i imagine it would look beautiful

@JR Well, probably because this video is 2 years old and the comment was a couple of days old on the time when you commented.

🤣🤣

um no they just said the salt lamp doesn't work so no point holding it for anything. Instead hold yourself a nice margarita 😁

@@KeiRad1anc3 like top commenter did, the guy with scientists and beers in his comment

I'm at 07:30 and I'm just like this is weird, and where is the real Derek?

@@KeiRad1anc3 It's almost like he's guiding us through the scientific process. :P

I was ready sending this to a friend who is a bit into those fancy fantasy toys. He knows their claims are bs but he also knows if he believe they work, he will have the desired affect.
I don't know what to do now ,

I think the way the video is presented does a fantastic job of showing how impressionable we are. If a viewer paused at various points and walked away they would leave with a totally different viewpoint because we don't tend to continue with our own research, instead trusting the presenter to be honest (or at least not motivated by funding or advertisers).

Who forced us to go to crappy schools in the first place?
People like you, who make it law to go to school, thinking you know what's beat for people.

@@JohnSmith-nz2yq Are you having a stroke? Or are you just dumb?

Education Institute nowadays is a business

He did imply placebo. The moment he brought up people feeling happier, I was very curious whether the test was blind. Glad that was the point he was working towards.

@@ToonedMinecraft
I didn't hear the participants were told to pay attention if they got happier during the experiment. So, they didn't know this could be one of the reactions.
In short, academics will only accept ions have a positive effect on humans only if they get an affidavit, signed by the ions themselves, that they influence in a positive way health and mood of humans.

@@O-Kyklop lol. Yeah, that's totally how science is done.

@@CyberSway
Yeah. And worse. Much investigations have been done, during the XIX and beginnings of the XX century, where one discovery was that humans cells can emit and receive EM waves.
And we got this guy here asking himself if ions have an influence on the human body and mind. And because he knows, the answer must be "No", he overlooks even positive results confirming that ions have that influence.

@@O-Kyklop you have a very conspiratorial mindset.

Good point on the comparison. I started college after 10th grade a "know it all", but now I often say that the most important thing that I learned at MIT was to say "I don't know". I learned it by seeing other experts speak like the one in this video. Once I can admit that what I know is a drop in an ocean of knowledge, it allows me to see that this ocean exists and gives me freedom to begin to explore it.

@@MrStanaland that’s an excellent point. I definitely won’t start at MIT after Sophomore year, but that is definitely something I need to remember. Thank you

The more you study, the more you learn that there's more to learn.

It was also refreshing how Veritasium interacted with the salt lamp seller, Derek wasn't confrontational or arrogant. He wasn't trying to prove the seller wrong or make the seller feel guilty, because he knows that the seller guy just has the wrong info, and that's why he made this video, to give the right info to the people who need it. This is the type of education I like to see, one that doesn't talk down to the uneducated.

Dunning kruger spotted

Same hahah

For some reason I thought they were meant to remove moisture in the air? I don't know why I assumed that. I never knew anything about the ions until this video.

Ditto. I thought they were just supposed to be pretty.

Jep. I have one of those. Never knew it was supposed to do anything other than producing warm light.

@@curlzOdoom at least that makes sense

That's authentic scientific method thinking right there XD

It's because they didn't cover it in essential oils

@@OmnistrikeRZ probably forgot the chant as well. Should've also protected the nozzle with a thin sheet of silk to keep interfering dark forces out, those eat ions.
Amateurs.

So, there are no ions.... Woohoo woohooo I didn't say that...

@@notjustforme8857 I think it was the 5G covering the air, oh and maybe those scientists were vaccinated meaning positive ions from demons..

Same, I received one from my mother who genuinely does believe in the pseudoscience, but I have to continually remind her of its falsehood. She is not willing to accept it. In the meantime, I have acquired a wonderful mood-lighting lamp.

@@facelessdrone Send her this video? lol!

They don't

@@georgeblank2648 according to your materialist worldview

@@georgeblank2648 no obviously not. I just did’t know that was what people said they did.

@@wolfetteplays8894lol, if you are happy with imaginary ions you also don’t need the ugly lamp.

wouldnt it be better if they were designed to produce positive ions? i think we could all do with being a bit less negative. who wants to go into business with me?

Norepinephrine, epinephrine, and dopamine: 👀👀👀

Glutamate, GABA,...

yeahhh.. where my biochemists and fellow meds at!.... bring it onnnn

they are good salesmen. They aren't good when the talk to expert of field they are talking about. Or student.

Hahaha underrated comment.

tbh it takes a lot of effort to debunk without hurting feelings, but it's a good way of doing it as the gullible person is less likely to dig their heels in and double down on their pseudoscience nonsense. Wish I had the patience to explain stuff as well as Derek.

I know I personally get rather upset when debating against snake lils, but I'm workin on it

honestly it wasn't debunked hard enough.
i'd bet someone who already thought this effect to be real would come out of this video thinking "oh so the tests that weren't done didn't _yet_ show the real effects, they'll need to test it harder to prove i'm right"

@@SuprSi honestly i think dealing with failure and being wrong should be taught in schools, not at a psychologist when you're 35.

The Canadian way.

Same

It's a big glowing rock that's perfect for people with light sensitivity (like me). I'd love to get one, but I'm sure my cats would knock it over immediately- mostly out of spite.

What should we investigate next, garlic's ability to ward off vampires?

I have one at my parents' house (wire needs to be fixed) and I liked the glow it had not the ions.

They give off a blue/pink serene aura, if you tune into your feelings you will be able to feel the serene aura

Studying ions for aeons you might say.

damn thats a good one

man

You are my favorite person now.

UNDERRATED COMMENT

Finer sand beach has more negative ions. You will get 20x more negative ions in your bathroom on average with warm shower running. Cold air conditioning will generate net/more positive ions.

Fukkin genius. My dad did that in the backyard. I'll get some indoor ones thanks!!

I want one that you can fragrance

"So this is kind of like an electronic nose or something for ions?"
internally: "ugh..... if that HELPS you....🙄"

"That would be illogical, Captain."

"That would be illogical, Captain."

@@imdawolfman2698 I don't know that one, is that a Spock attribution?

@@ericulric223 yes, I grew up on Spock's logic and curiosity, his 'superpowers'.
I often spill a drop of ale to Brother Roddenberry for the Utopian vision he created for us to aspire to.

And resulting high amplitude alpha waves.

thats why hes so happy

We could be related if your family lives in or came from Minnesota.

I wonder if it will work with my black tourmaline from a nearby mine.

@@digidragon1.be better to make a laser.

It is pretty funny how the thumbnail answers the question. A good example of Betteridge's law of headlines.

yeah i thought that was awesome also!

It's kind of reverse psychology. If it didn't say "no" in the title, it would probably get less views because the subject isn't that interesting to many of us, even though we've all heard of these lamps. However, when you bring to mind that no, they don't work... well that's more interesting because I'm asking myself "why doesn't it work"? Which the video is destined to answer. So in conclusion, it's almost more clickbait than it otherwise would be. But there's nothing wrong with clickbait.

r/savedyouaclick

I'll help with that.

that is how information works bru

And that man is so refreshing too. Very elegant face.

the next line MUST have been "do you have any ion lamp at home?"

Dunning-Kruger effect at work. Real experts are burdened with the knowledge of the vast expanse of questions that they don’t know the answers to.

"- So (...) it's producing no negative ions?
- We're certainly not able to detect any negative ion."
Also a real scientist's response =)

True, but I think we can safely say that after working for _55 YEARS_ in the field, this man is indeed an expert.

@@nob2243 It’s widely accepted that 10.000 hours is the average time it takes to be considered an “Expert” in something.

@@weliveinasociety1154 That 10,000 = expert rule itself is, itself, bunk, of course.

@@Demmrir The idea is that someone who studies something for 3 hours a day for 10 years, will have an expert-level of knowledge in that subject. The word “expert” is quite subjective. I feel like an expert is someone who devotes their entire life to that thing. There’s not some magic number you have to achieve and all of a sudden you’re an “Expert”. It’s just an estimate.

I liked his response, too.

thought exactly about the same line :-D

no one said un-ionically. :s

I hope his name was Ian, studying Ions for Eons.

I'll definitely keep an eye on him finally saying he's been studying ions for eons

So iconic

Same, I don’t even know they were supposed to ‘do’ anything other than look cooler than a desk lamp.

it's a light you can season your food with

@@jockejarbinks3747 Wait...you're not supposed to periodically lick them?

it's a great diffuse light source.

Exactly the view I came in with and went out with 😂

Exactly the way it should be.

It’s almost like that’s what scientists do.

Being strict with conclusions is what makes good profs so boring when you're young but you gotta appreciate how responsible they with their language when you grow up

@@Segagens This is the way

I get a mental stiffy when researchers say "that we can measure" and not "that there are".

I wish this would happen to any of my videos for once. Algorithm is unfair.

@@whanowa u just gotta make them a shitload of money

No. This video has been popular for years.

weird how this happens

For real, I thought this was a new Veritasium video from how much I was seeing it in my recommended. Was very surprised to see it was from 2019.

For me it does.

You have never been electrocuted

@@kk-iy4bw how would you know? I've been shocked a few times from outlets its only 120 volts not a big deal...

@@duncanweir8773 google the definition of electrocution

@@kk-iy4bw "injure or kill by electric shock"

I thought the opposite, those are his old professors from his Master's program. The comfort level is quite high. The way the one man said, "Hi Derek" I could hear 'what now?' resigned to his constant curiosity.

You. Lamp. Now

@@BariumCobaltNitrog3n oh no, the question guy again

@@agrainofsun yeah, with his super obscure quests

I would imagine some fees are exchanged "behind the scene". Using that ion detector for an hour would not come free.

Well, expert is relative, not a binary yes or no designation, so he lets the listener decide how expert he is.

@Sterf Google list all the phonemes then

Beware of those who call themselves to be "social scientists" or "social engineers," as they suffer from dyscalculia They are ultra-extreme leftists with multiple personality disorders. They can't reason or think logically.

Sterf Google I am half an expert on phonetics. For decades, I had severe speech impediments, because I had too great a difficulty in distinguishing sound-alike letters in my flawed hearing. Eventually, I bought books on phonetics like those on IPA letters, intonations, voice-training for actors & singers, elocution, etc. I meticulously studied all speech parts, their lip positions and tongue positions. I regularly keep a small notebook on pronunciations of obscure words and jot them down in IPA letters indicating certain sounds. Today, I speak fluently.

@@pinklady7184 People who have dyscalculia have problems with numbers and math. It has nothing to do with personality disorders.

You: still clicked, watched, and commented

@@shawnphillips2556 he could have just left the comment and went away lol. watch-time is the most important thing on yt now.

@@realchoodle finally, somebody ;)

When you need a click baity title but you are a man on standard and wont allow pseudoscience to influence people who didnt click or watch through the video..

anti-clickbait. I love it. First time I saw it was by Adam Neely. It's great

You have to give things the benefit of the doubt. Be sceptical all you want, but you need to allow things the opportunity.
We cannot have science, if we do not test things.

Rather sure they scripted that and he was aware of what would happen.

That is science. You have to test it.

@@kolelokaram8541 Without the "but". Being skeptical includes being skeptical of the things you know, and basing your assertions on that which has more evidence. Be skeptical that negative ions AREN'T good for you, gather some evidence and conclude. You might discover something along the way

I also love how the professor spoke like a true scientist:
Veritasium: "It's producing no negative ions"
Dr. Dalleska: "We're certainly not able to detect any negative ions"
There is always that very very small chance that it is indeed producing, but we're not able to detect it. So as a scientist you can't say with absolute certainty that it is not producing.

Hahaa :D

He paid with a card, SO HA! (I'm fun at parties)

But he used his card... so no change noted.

@@BloodnutXcom And if he kept the receipt, it just made things worse! :D

@@BloodnutXcom Would the act of inserting the card have potentially removed some plastic particles from the card, therefore making it lighter, technically?

But thats hardly the topic for discussion :p

I didn't even realize there were supposed to be ions coming off of salt lamps. I just bought mine so I could get some dim light in my room for nighttime. First thing I did was replace the warm incandescent bulb with an LED to save that little bit of energy 🤣

@@pineapplepizza27 lmao

Exactly, u don’t have to be into alternative medicine to appreciate a salt lamp, they’re just cool

I didn't even know that they were supposed to 'do' anything.

I thought it was just a neat lamp. I had no idea it was supposed to actually do something beyond lighting up my room. Not that it actually does.

@@shelfdefence1112 It probably does help destress due to the soft, warm, light that they emit.

@@shelfdefence1112 well it's a great source of salt and minerals. Very tasty and lasts a couple years.

@@youkyuu2402 tasty...?- what-

@@thesoupiestsoupster9019 lmao

The package of the salt lamp I bought wrote, it has a calming effect. I like the soft, warm light. I like to think that these lamps do help to calm down. I set the lamp near my bird cage. I have canaries and they often wake up during the night or are awake for too long. Every time I turn on the lamp they sleep better.

Well if you believe it, it must be true.

@@lucrative6477 the placebo effect is very real and entirely based on belief

salt is the ingredient. People use salt inhalers to improve airways. People pay to travel to get therapy in salt caves. And if these are run for some time they do shed the salt around the lamp so I always put my salt lamp on a saucer or plate.

@@bonnenaturel6688 And salt create rocks in your organs that will be very painful if not deadly.

...except that as the video went on to explain, there's not a lot really much strong evidence of those negative ions being beneficial. But yes, waterfalls are wonderful and feel good to be around.

Serotonin is the powerhouse of the cell

I'm not even in college and that statement made me cringe

Serotonin is the transmitter house of the cell power.

My research has absolutely nothing to do with it, and that alarmed my sham detectors. I would've instantaneously noped out of there.
Also the dude just claimed that all living things work like that. That's a *very* bold claim.

Yeah? Well you folks in Big Serotonin WOULD say that, wouldn’t you? Always trying to crowd out artisanal, small-batch serotonin artistes from the marketplace :-(

oof

Oof

Too soon!... I guess? :P

Wait, I get it

Sadge

He's changed the game lol

Yep that's the only reason I'm watching this, the basic answer has been given now I'll find out the details.

Adam Neely has used this approach for several years

How dare you.🤭🤣

And it worked! Like a clickbait question in reverse, I wanted to see how a video with a one-word answer in the thumbnail could possible be 16min long

I'm not alone.

I was expecting an "ion man" joke.
;)
(Not really...)

Same

Yo

@@notthere83 ION MAN came to mind.

All of the scientific papers I've read claiming that they produce light weren't verifiable later on. Often the sample sizes were small, and there's very little research indicating these lamps are even _capable_ of lighting a room. The perceived effects could very well be due to the placebo effect, or some other source of light.
:)

I thought they were for attracting animals, they're fun to lick

@@alakani wtf

@@RyanTosh if this is humor its very bad humor

@@angwydud Humor's subjective, 18 people would disagree :p

Technically sumblimation is a matter of pressure not temperature. With high temperature the salt would melt not sublimate.

@@Rig0r_M0rtis sublimation is the phase transformation directly from solid to gas. It is a line on the pressure/temperature phase diagram of a material, so sublimation temperature will depend on the pressure. At some pressures there will be no sublimation because the liquid phase can exist. But as an example, CO2 has a sublimation point at ambient pressure, which is the reason why dry ice exists.
But for NaCl at atmospheric pressure it will melt and then boil, so no sublimation.

@@wouterbaake7386 yeah, so? That's just what I said.

@@Rig0r_M0rtis Just clarifying that sublimation is not a matter of just pressure but a combination between temperature and pressure

As you said ... he’s a “salesman”.

I yelled same thing to the screen. On point answer. No strict conclusions can be drawn through single test with single method on a single sample.
But detected evidence as the result of that test can be spoken for.

@@anilhaksever Well said my guy

Yes, I like this answer very much.

I was about to type this comment, and then I saw your comment at the same timestamp. Thank you.

It’s also a politician’s answer. :-D

The idea of being an "expert in ions" is ridiculous to begin with, its such a broad category, so yeah it'd definitely be concerning if someone claimed to be an "expert in ions"

I bet that guy in the store considers himself an expert on ions.

Scientists answer questions really carefully. Notice when Derek asked the professor, “does that mean the salt lamp doesn’t produce negative ions?”, and he answered, “we didn’t get to detect any.” 😂 many statements that normal people think equivalent could appear not directly but only conditionally so.

Oh, me? I'm a nutrition *expert*. I've read all the blog posts about it. /s

@@shihyuinchew8494 Exactly. You can tell he considered that question carefully before answering.

He missed the perfect opportunity to say he's been keeping an ion them for the last 55 years!

@@Rachel-fi4sc I like yours better

@@mrwassef I wish it was original XD I can't take credit; I lifted it from another comment.

He would probably think that 55 years isn't long enough to be called an eon. ;-)

Dang it! A two-year old video and I missed the opportunity of posting that comment by two weeks!

I think he just didn't want to be known as an "Ion Expert." Maybe his research goes beyond that, anyway

you wouldnt call an electrician a bulb expert lol

there's no such thing as ion expert except for laymen and hippies maybe. so if i was asked about that i would be very, very embarrassed to say yes even if i was, in fact, an ion expert.

@Gernot Schrader
"Are you an anion expert?"
"No, but I'm a cook, so you could probably call me an _onion_ expert..." **ba-dum tsss**

@@MusangLaut2 my father in law and brother in law are both electricians. You can bet your ass i'm going to refer to them as bulb experts from now on

Haha, me too 😂 If my mom knew that her salt lamps are said to have a positive effect on her, she’d probably throw them out. 😂

And that's fine! As a lamp, it's cute. People just shouldn't be going around claiming health benefits when there isn't any.

^^ A good reason to own a lamp.

It's a wonderful night light.

@@Supvia omg youre hilarious!

So true, his statement is clearly correct. He can't know for sure if there are coming ions from the device.

This was my favorite part of the video!

I love how it's such a scientific way of thinking. We don't see one test and say it's 100%. We test our hypothesis over and over again before we even call it a "theory"

Thats not scientific, its PleaseDontSueMeology

@@iwantitpaintedblack Not true, there are multiple reasons why a mass spectrometer may not detect ions. I myself have injected ions into a mass spectrometer and not seen any meaningful signal.

@@lukenajeeb8255 Basically the scientist is saying there might or might not be ions, the method proven to detect ions has not detected ions. With the expert comment he didn't say he's an expert, he's only studied them for 55 years, written papers about the aspects of ions. He doesn't throw bold claims, merely expel the data he has.

That's not plausible deniability. That is the fact he has shown.

i was thinking the same thing

That's what science is, baby. You never say "we know", you say "by our methods, we think that.."

How can you possibly mistake stating the facts for plausible deniability?
Did you discover the concept one month ago and decided to throw it at anything even remotely similar?

_PFFFT-_

I deep sighed, congratulations lmao

very nice xD

Think so six. Ions are colorless, & neons are in color?

🤣I admit it. I LOVE corny humor like this.

Thinking is hard I guess. :/

This is so true and I wish more people would realize it

I feel like most people don’t know what Alternative facts are. That was just someone saying that “my research contradicts yours” in a very poorly worded way.

Its worse than that though.
Its not just about disproving things that aren't true, but its also that its really difficult to go through "peer reviewed literature."
Honestly, unless you are at least working on a graduate degree, its probably a waste of time to mess with the incredibly tiny details of peer reviewed research.
I know there are problems with news journalists, but generally the best source of looking critically at a claim is simply asking "what is the mechanism by which this assertion works."
Quickly you get the explanation about some production of serotonin and then you consider how few negative ions you breathe in relative to all the atoms you breathe in and you quickly see how ridiculous the claim is.
You don't need to mess about with research and studies, just use common sense. That's going to get the lay person way further than mucking through details that ought to be left to people who have nothing else better to do.

What about 5G cell towers? check that out

But unless his equipment was broken or improperly used, he could have just said there weren’t any.

@@Sashazur that would not be scientifically honest.

@@Sashazur That implies every piece of technology is perfect and can detect everything.

The guy in the salt lamp store "You didn't do it right, gotta wait 10 years for the effects to take place!" lol

@@Sashazur You know no machines nor humans are perfect right?

underrated comment

@@creatorss6539 my point exactly 🤣🤣🤣🤣

Heh gold

actually, if you put those salts in a bath, it would probably release more seratonin, since you can absorb it through osmosis in a liquid medium.

x)) great one