[Closed] why do we have 'fingerprints'?

i'm going to guess that the texture and variation in pressure/contact points on the fingers improves grip and tactile response.

So it's not so police can catch criminals 😉

There is no "why"

Is it to get those plastic bags for veggies out of the dispenser box at the supermarket?

do identical twins have the same fingerprints ?

No 'why'? That'd be very dissapointing!

do identical twins have the same fingerprints ?

Nope.

For sensitivity.

so jesus can tell who did it.

It helps grip.

That's a damn good question. Obviously evolution has found an advantage in it - but it's not grip(slicks grip better than treaded, except for rain).

it so that we can hold wet stuff then 😀

Koala Bear fingerprints are almost identical to human fingerprints. If that helps?

Logical - but hard to see the evolutionary benefit.

This is the most believable in a quick search:

http://www.physorg.com/news158088270.html

[i]This is the most believable in a quick search:[/i]

Or you could have read my answer.

or even mine, the original and still the best 🙂

Well I did read both of your replies - and if you'd quantified them by saying 'and I'm a fingertip scientiist' I'd have looked no further.

😉

and Pineapple pickers don't have fingerprints

Neither do people who slow down belt sanders with their fingertips - care to elaborate bruneep?

Why does my bike have "fingerprints" and it's grips? For consistent grip in varied conditions? I reckon, based on no knowledge, that my fingers might have a textured end for similar reasons. Perhaps.

Or maybe it's where the aliens barcoded us.

dont know about you but they help me climb up walls

stuckinarut - Member

Is it to get those plastic bags for veggies out of the dispenser box at the supermarket?

why can't I get the blasted things open though?? I have to lick my fingers to get any grip on them! 🙁

SteveTB - as a kid I put my finger into the propeller of a model aircraft and neatly (and painfully) removed one of my finger prints. Presumably it didn't go all the way through the growing layer because the skin did grow back some weeks later - and so did my fingerprint. So perhaps your belt sander's prints will grow back too - provided they stop playing with abrasives.

RooleyMoor - Wet weather fingerprints. Get those swap things changed for small block 8s.

[url= http://books.google.co.uk/books?id=a7-f66fRfzQC&pg=PA75&lpg=PA75&dq=pineapple+pickers++fingerprints&source=bl&ots=F_l0ohgGXC&sig=2ozRmzp4sg9yGFhEQlXztacW32A&hl=en&ei=DBv6SeTpFd-NjAfyj-G3Aw&sa=X&oi=book_result&ct=result&resnum=4 ]I have elaborated[/url]

I went into bone with a run in with an angle grinder about 15 years ago, there is a scar, yet you can see sort of where the print still is - how does that happan!

Thanks for that bruneep - very interesting. My lips did once bleed when I was quite young after eating pineapple; I always thought it was acetic acid.

Strange you should know that, but glad you did.

🙂

igm - good idea! :-/

So they can identify you on Judgement Day.

[i]Strange you should know that, but glad you did.[/i]

He's a QI fan I reckon.

you'd quantified them by saying 'and I'm a fingertip scientiist' I'd have looked no further.

Something I read whilst doing one of my many anat and phys courses.

It's a bit like the question why do men have nipples?

why do men have nipples

coz we start out as females in early stage of development but our y chromosome kicks in and testosterone reverses nipple/breast development and we are left with our nips

the y chromosome is just an evolutionary modified version of the the x so it stll holds a lot of the same info, its just suppressed by methylation of the dna itself and interaction with certain proteins that arise through a process called imprinting...

ill stop now

OK kimbers explain this ............ how come I've got such a tiny index finger, and yet a huge ring finger ?

........ apart from the fact that I'm a 'real macho man'

[img] [/img]

It's a bit like the question why do men have nipples?

It was supposed to be a rhetorical question! 😉

Well, thankyou all. This has been most enlightening - although I'm still not entirely sure anybody really knows!

When moving the ridges of your fingerprints across a surface, you experiencing a very high-frequency vibration, which adds to your fingers' sensitivity. Blah.

how come I've got such a tiny index finger, and yet a huge ring finger

OK, what evolutionary use is pubic hair? Other than showing that you're sexually mature?

"macho, macho man! I wanna be, a macho man!"

oks, big of the ring finger.

Keeps the reproductive organs warm to help maintain perfect temp for making more mountainbikers.

Keeping them warm? Thought seed sacks were on the outside to keep them cool?

[i]Keeping them warm? Thought seed sacks were on the outside to keep them cool? [/i]

They're on the outside for the same reason to maintain temperature.

The love spuds are on the outside so you can trap them under your saddle on drop offs

the wiry/curly hair in your armpits/scrot actualy wicks moisture and aids cooling, shave it off and you get sweaty (and it feking scratches when it grows back).

There is no "why" to any of this - "why" implies intent / design - and we evolved we were not designed. Stuff like this "just is"

Pubic / armpit hair creates a greater surface area to evaporate the pheromone laden sweat we produce in these areas so we spread our scent more and can find a mate easier.

wrong - pubes are for keeping crap out of our bits. fact.

But why? Because of biological evolution.

But localised order, like biological evolution, seems to oppose entropy which is a fundamental property of the material universe. Why?

Shut up you annoying child!

simple
index finger size is related to penis size and ring finger size is related to the diameter of your anus

LOL !

There is no "why" to any of this - "why" implies intent / design - and we evolved we were not designed. Stuff like this "just is"

Why might ask why something evolved that way - things tend to evolve for valid reasons.

things tend to evolve for valid reasons.

But not necessarily - sometimes it's just for random reasons.