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  1. A Mystery: Why Can't We Walk Straight? - NPR

  2. Why can't Humans walk in a straight line : r/biology - Reddit

  3. Single transverse palmar crease - Wikipedia

  4. Robert Krulwich: Why Can't We Walk Straight? - YouTube

  5. Why Do Humans Walk in Circles? - Live Science

  6. Why Can't (Blindfolded) People Walk Straight? - Mental Floss

  7. Turn, turn, turn: The mystery of why humans can’t walk straight

  8. Can blind people, or blind-folded people, walk in a straight line?

  9. Why can’t blindfolded people walk in a straight line? It’s a ... - Aeon

  10. technology - How did people make things perfectly straight?