Science is with child . It ’s what took us fromconstantly dying from plaguein the blue ages to onlyvery rarely contract the plaguein the modern world ( and treating it with antibiotics if we do ) .

But science does n’t fuck everything – and some of the things it ca n’t explain are almost embarrassingly unremarkable . So here are six thing you ’ve almost certainly done in your daily life that , as it stand , defy science in some means .

Use Acetaminophen ( aka Paracetamol )

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Acetaminophen – you may know it as Tylenol , or paracetamol if you ’re outside the US – is so ubiquitous as a pain backup man that you ’ve probably never stopped to wonder how it works . Which is golden , becausenobody really knows .

Take a looking at the physicians ' note that comes with the pills and you ’ll see a less - than - solace message : “ Although the anodyne gist of acetaminophen is well establish , the site and mode of legal action have not been clearly elucidated . ”

In other words : we cognise it work , but we do n’t know how or why . There are some surmise , though – the most common explanation you’lllikely get from a doctoris that it might occlude prostaglandin , the chemical courier in the Einstein that let us acknowledge we ’re in pain .

There also seems to besome evidencethat paracetamol impact our serotonin stratum . While serotonin is unremarkably thought of as a “ happy internal secretion , ” regulate mood upset and helping us finger less anxious and depressed , it really has a persona in a whole bunch of thing . These include quietus , regulating body heat , sexual activity – and , yes , pain .

If serotonin is the key fruit to acetaminophen ’s success , though , it may lift more head than it answer . Serotonin ’s part in pain is complicated , and while doctors do sometimes dictate antidepressant for continuing pain in the ass , it ’s yet another medication that , while it seems to work on botheration , we do n’t really understand how – and that ’s because …

Pretty much any depression medicinal drug

Have you heard the good intelligence ? Ketamine , the party drugmost favored by our parents , has turned out to be something of amiracle curefor depression , thus proving that notallhorse medications are abad idea .

How does it work ? Itinhibits glutamate handout , scientists say . No wait – it’ssomething to do with 5-hydroxytryptamine . Does ketamine somehowrestore the synapsis and neuronsthat get lost through economic crisis ? Is it even the ketamine itself at all – perhapsit ’s actuallywhat the drug gets plow into by our consistency . Maybe it’snone of those explanations – or maybe it’sall of them .

As you may have gather , the precise chemical mechanism by which ketamine treats natural depression is still a subject of some disputation . And peradventure that ’s to be expected – it ’s hardly a first - line discourse , after all . But as it turns out , even most of our even treatments for Great Depression – in fact , even depression itself – are n’t completely infer , even by experts .

“ A peck of what we recollect about antidepressant drug is still notional , ” explainsWebMD . “ We do n’t really know if low levels of serotonin or other neurotransmitters ‘ cause ’ depression , or if raising those floor will resolve it . We do n’t know enough about brain alchemy to say what ’s ‘ balanced ’ or ‘ unhinged . ’

“ It ’s possible that antidepressant drug have other unknown effects , and that their benefit do n’t have as much to do with neurotransmitter levels as they might with other effects , such as regulating genes that see to it nerve cellular phone emergence and function . ”

Even the very oldest depression medication – lithium , which has been used as a mood stabiliser andsoft drink additiveforover 150 years , andpossibly as long as 1,600 – follows this “ it works , but darned if we know how ” formula .

“ Although we do n’t bonk exactly how Li work to plow bipolar disorder , investigator believe it works in the brain to boost the levels of certain chemical , including serotonin , ” compose Kevin Le , a pharmacist forGoodRx Health .

But “ although it ’s an old medicament , atomic number 3 is one of the most effective for treating bipolar upset , ” he explain . “ Because of this , it remains a first - choice medicament , despite its risk , side effects , and drug fundamental interaction . ”

gape

We yaw all the metre : when we ’re stock , when we ’ve just fire up up ; when we ’re bored , or when we ’re about to start something novel . You ’re probably yawning right now – it ’s so communicable that just thinking about a yawn can set one off .

“ People who sky - honkytonk say they tend to yawn before jumpstart . Police officers say they yaw before they enter a hard situation , ” Adrian Guggisberg , a prof of clinical neuroscience at the University of Geneva , order theNew York Times .

But why do we do it ? You may have heard it ’s to increase the O levels in our parentage and keep us alert – that idea wasdebunkedall the way back in 1987 .

A more modern idea is that the motion and air flow serve to cool down our mind , staving off sopor . “ When our dead body temperature is warmer , we find more banal and sleepy-eyed , ” explained psychologist and yawn - expert Andrew Gallup , also in NYT .

“ It could be that evening yawns are triggered to endeavor to antagonize sleep onslaught , so we yawn at night in an attack to conserve some state of rousing or alertness , ” he allege .

However ,   it ’s possible oscitance does n’t have a strong-arm burden at all – another theorysays that it ’s more of a psychosocial phenomenon . There ’s some research to support this : Einstein imaging has shown spikes in the empathy and social country of people catch someone yawn , and we seem to “ catch ” yawningmore from people we knowthan strangers . Dogs – surprisingly empatheticanimals – can catch yawningfrom their favorite homo ( as canelephants , queerly enough ) , while baby – notoriously malign – do n’t do it at all , even with their own female parent .

So do we yaw for psychological reason or physical ones ? Maybe it ’s both . Or maybe it ’s neither ! “ The real answer so far is we do n’t really know why we yawn , ” Guggisberg excuse .

“ No physiologic effect of yawn has been note so far , ” he narrate NYT . “ That ’s why we speculate . ”

Wear spectacles ( or drink from a methamphetamine hydrochloride )

We resist you to explain glass without just betoken at a nearby windowpane or tumbler and saying “ that . That ’s glass . ” But do n’t interest that you ca n’t come up up with a in effect definition : glass – what it is , how it ’s structure , why it even exists at all – is something thatbaffles scientiststo this day .

There ’s a common approximation that drinking glass is actually an fantastically easy - move liquid , rather than a unanimous – which would certainly raise questions around how ice fromaround three and a half millennia agocan expect so un - melty .

In fact , deoxyephedrine is a solid , but a particularly uncanny one : it ’s what scientists call anamorphoussolid . This means that its molecule are all disorganised like you ’d expect to see in a liquidity , rather than the regular crystalline social system that solid unremarkably have .

But despite knowing what it looks like on a microscopical stage , the fundamental bodily structure of glass remain , ironically , unintelligible .

“ The deep and most interesting unresolved problem in solid state hypothesis is probably the theory of the nature of glass and the glass modulation , ” Nobel prizewinning theoretical physicist Philip Warren Andersonwrote back in 1995 . The question , basically , is what happens when a fluid becomes glass – how the corpuscle can seem to be arranged like a liquidity , but do like a solid , and what cease them from settling into a standard solid form .

Anderson optimistically thought this question could be work “ in the coming X . ” alas , he was wrong : as you may be cognizant , it ’s now 2022 – and we still do n’t really know what the heck meth actuallyis .

“ Liquid and methamphetamine have the same structure , but comport differently , ” Camille Scalliet , a glass theorist at the University of Cambridge , toldQuanta Magazine . “ Understanding that is the primary question . ”

Ride a bike

It ’s very meet that we describe something instinctive as “ like riding a bicycle , ” because it turns out most of us havepretty much no ideahow to in reality explain the activity .

Do n’t get us incorrect : science hasworked outa lot of things thatgo intokeeping a cycle vertical since the fomite was invented more than 100 class ago . But even those scientists who study bike science for a livelihood admit that the exact manner those factor interact with each other are still a chip cryptical .

“ If you take a bicycle , and you hold it with your hands and permit go , it ’s proceed to fall over , right?”saidJason Moore , assistant professor of biomechanical technology at the University of Technology Delft , in the Netherlands .

“ But [ … ] there in fact is a speed at which it will not flow over , ” he explained for the BBC ’s CrowdScience series . “ Maybe you ’re at a pitcher’s mound , and you take your bike and let it roll down [ … ] it ’ll resile around and not really fall down – and it ’s sort of odd , it does n’t remain up by itself , but it can stay up by itself too . ”

depend on who you ask , a motorcycle may stay up for any phone number of reason . A physicist may betoken to the gyroscopic result of the wheels ; an engineer might put it down to thematerials or geometryof the bicycle ; while a biomechanics expert might talk about the precise posture and spatial relation of the passenger .

Here ’s the trouble , though : you’re able to remove pretty much all of those qualities , and the bike will remain static .

“ There ’s actually a long tilt over the last hundred years or so of people make those sort of statements , and those are mostly wrong , ” Moore said . “ you may make some really singular reckon bikes that still have the dimension of a bike , but remove the reason that most masses think are the reason the bike [ is static ] . ”

“ All these things are playing together … I can change one , or take one away ; wiggle around the other thing , and I get a bicycle that still counter bullock or a bike that ’s still self - unchanging , ” he explained .

Have a butt

That ’s correct : butts ! We all have ‘ em , loyally perched underneath us as we sit on the toilet scrolling our telephone set . But have you ever stopped to considerwhywe have such monumental can ?

“ Only humans have butts , ” said Heather Radke , a diary keeper and author of the bookButts : A Backstory . And why that is is a question that ’s only partially answered , she explained in the Vox podcastUnexplainable .

“ The muscle and off-white part [ of the trouble ] is moderately well - studied , ” Radke allege . “ Those muscles are big – they ’re the biggest muscles in your body [ … ]   [ the ] hypothesis [ is ] that humans developed a set of adaptations that made them excellent long - aloofness runners , and one of the anatomic adaptations [ … ] was the muscles and bones of the butt . ”

But ifSir Mix - A - Lottaught us anything , it ’s that our badonkadonks are far more than just brawniness and bone . “ The other half [ of the question ] is the fatness , ” Radke said , “ and it ’s much more complicated – or at least it ’s much less known . ”

The problem of explain why humans are quite so bootylicious is two - fold , Radke explained . One is our own demerit : historically , we ’ve always got toocaught up in racismand sexism to actually examine butts in an accusative way .

But the other side of it is purely practical : fat does n’t get out a record .

“ os allow for a fogey , ” Radke say . “ A muscle connects to a bone ; we can learn what those muscles looked like based on the marks they leave on the bone . But there ’s no fossil record of adipose tissue , just like there ’s no fossil record of hair , or skin or whatever . ”

While we do it the reason for theamountof blubber in a human butt – it ’s due to the size of our brains , weirdly – the figure and placement is yet to be fully account for . And perhaps we never will : Radke suggested that we may just be too nigh to butts , metaphorically address , to ever look at them scientifically .

“ One of the lessons of the butt is how much we project on to it , ” she allege .

Of course , once we estimate out the butt , we get to the anus – andthat might be even harder to explain . So you be intimate what ? Maybe we should bury trying to understand things we use every daytime , and just bind simple problems .

You know … likenuclear fusion .