Sunset on an ocean shore

A Better Night’s Sleep

If you tend to be a target for ads about everyday-carry tools, as I am, it’s understandable that you would want to sleep better, because sleep—despite its uncertain origin and adaptiveness—is the original EDC tool.  It appears to benefit creativity, emotional regulation, threat evaluation, memory processing and other covert cognitive processing, waste disposal, and maybe …

A Better Night’s Sleep Read More »

A left hand reaches out, nearly touching a right hand.

Left Hand, Right Hand

Years ago, William Calvin wrote a popular book attributing the evolution of right-handedness to the way it allowed women nursing an infant to still throw stones at a threatening predator. On the other hand, Faurie and Raymond thought it was left-handedness that carried the selective advantage in combat with righties. The fact is that no one knows where left-handedness comes …

Left Hand, Right Hand Read More »