Re: You can change the name
The relative length of those fingers seems to be directly controlled by testosterone vs estrogen, giving longer or shorter fingers respectively. Among men, differing levels of testosterone will cause variation within the gender. So really, it's an indicator of testosterone expression in the individual.
Here's a good one... https://www.sciencedaily.com/releases/2011/09/110905160922.htm
Biting the hand that feeds IT
