... we nod our heads for "yes" and shake it for "no"?
The best explanation for this comes from Charles Darwin, who related these gestures to a
baby's nursing habits. The forward head motion, or nod, is supposedly a breast-seeking pattern while
shaking the head from side to side is a breast-rejecting motion. That is, in the first instance, the baby is
saying "yes" and in the second it is saying "no". This is confirmed by the fact that a baby born deaf and
blind will nod for "yes" and shake its head for "no".
Do you have any questions you've been wondering about?
Let me know, and I'll see what I can do.
