A Mystery: Why Can't We Walk Straight? - NPR
Why can't Humans walk in a straight line : r/biology - Reddit
Single transverse palmar crease - Wikipedia
Robert Krulwich: Why Can't We Walk Straight? - YouTube
Why Do Humans Walk in Circles? - Live Science
Why Can't (Blindfolded) People Walk Straight? - Mental Floss
Turn, turn, turn: The mystery of why humans can’t walk straight
Can blind people, or blind-folded people, walk in a straight line?
Why can’t blindfolded people walk in a straight line? It’s a ... - Aeon
technology - How did people make things perfectly straight?