Op woensdag 1 april 2020 22:20:53 UTC+2 schreef Mario Petrinovic:

https://youtu.be/KG5HGQ3RvrE

Water-induced finger wrinkles improve handling of wet objects
Kyriacos Kareklas cs 2013
https://doi.org/10.1098/rsbl.2012.0999

Upon continued submersion in water, the glabrous skin on human hands & feet forms wrinkles.
This is known to be an active process, controlled by the autonomic nervous system:
do these wrinkles have an important function?

In this study, we show:
- submerged objects are handled more quickly with wrinkled fingers than with unwrinkled fingers,
- wrinkles make no difference to manipulating dry objects.

These findings support the hypothesis:
- water-induced finger wrinkles improve handling submerged objects,
- they may be an adaptation for handling objects in wet conditions.




Yes, well possible, Mario.
First we need good comparisons in finger wrinkling between humans & different spp of apes & monkeys in diverse situations.

We've discussed this extensively at the AAT discussion group & elsewhere, but IMO there are many much clearer indications of littoral Pleistocene ancestors (not of "aquatic apes" of course).

IMO only a few retarded self-declared "scientists" still believe human ancestors ran after kudus or mammoths: there's no doubt that our Pleistocene ancestors always followed the waterside & frequently waded bipedally & dived for shallow-aquatic foods,
where wrinkling fingers were probably advantageous.

Verhaegen 2013 Hum.Evol.28:237-266
"The aquatic ape evolves:
common misconceptions and unproven assumptions about the so-called Aquatic Ape Hypothesis"
For an update + refs, google
"two incredible logical mistakes 2020 verhaegen"

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