This article would’ve been a lot more interesting for laypeople if it had pictures showing the described muscle and tissue structures.

> The most fundamental evolutionary act is motion, not cognition

This is highly reductive. Evolution and survival cannot be explained by one single facet of a biological organism.

https://pmc.ncbi.nlm.nih.gov/articles/PMC2997957/

“Why I Hate the Index Finger” by William L. White, M.D., was originally published in Orthopaedic Review, Volume IX, No. 6 (June 1980) pp. 23–29.