You can extrapolate behavior from palm prints.
This is science.
Certain genes lead to certain reactions when met by environmental factors.
Palm prints are passed down by genes. Everything is.
To understand an organism is to understand their genetic makeup. You can understand genetic makeup by having hundreds of millions of test subjects.
A second vector of analyzing an organisms behavior from palm prints is to read is calluses, areas the get frequent use.
Would you say a man who shovels dirt for a living is more likely to murder? Consume drugs? Reproduce? Than a man who jerks off to hentai on 4chan for the past decade?
Well you can tell who jerks off all day and who shovels dirt by hand prints, marks, and calluses(hand analysis).
American btw. Highly European descendant. Hatred for everything I see on a screen. Extremely based. Yes I know my country is a rotting corpse. Everywhere with jews is.