The human body is an elegantly evolved machine , though it does keep on several superfluous feature that are no longer all-important for selection , from manlike tit and floating ribs to wisdom teeth andbutt hair . Speaking of which , what ’s the power point of toenails ?
Arguably among the grossest parts of the human consistency , it ’s easy to remember that toenails serve very little intention , aside from harbour fungal infection . It ’s hard to think life being any more gratifying – or suffering – without these yellowing , wannabe talons .
On the other paw , fingernailshave a more obvious function . These drop shield of keratin sit above the delicate fingertip , enhancing tactile sensitivity by providing counterpressure and thereby improving ok motor skills . pick up a lilliputian needle from a mesa airfoil is made significantly easier thanks to fingernails . what is more , they can be used as a tool for scratching and opening annoyingly fiddly publicity .
It ’s not as apparent , but the same is somewhat straight for toenail ; theyprovide protectionand help refine sensitivity . It is said that nail - less the great unwashed would have a harder metre sensing elusive changes in the ground beneath them , increase the risk of lose proportion .
However , it could be argued the gift of toenails is not as straight off evident as fingernails becauseHomo sapiensare bipedal beings that tend to bank on their hands for subtle tactical manipulation , not our metrical unit .
The same ca n’t be said of primate relatives , many of which also have nail just like humankind . It ’s not clearwhy most primate evolve flat nail , as counterbalance to many other vertebrates that possess crisp nipper for hunt , scratching , and wounding . However , one idea is that the flatten nail avail some of our common prelate ancestors to go up trees and grip branch ( by comparison , claw could easy snag and be cumbrous ) . primate are in general societal animals that live in groups , so perhaps our unusual nails had something to do with social grooming .
Whatever the advantage , nails amaze around . When some primates will the trees andbecame bipedal , the supererogatory - deft digits on their work force may have prove useful for crafting tools and pull wires the forcible human beings around them . Feet were no longer call for for clasping branches , but toenails provided some basic aegis ( or , at the very least , did n’t spoil their survival ) so they remained firmly order on their feet .
So , next time you ’re clipping your toenails and enquire what natural natural selection was playing at , remember you ’re looking at an obscure wedge of your species ’ evolution ( well , if we ’re being generous ) .