Most of us can correctly remember melodies and lyrics learned in childhood, even years after last having heard them.
When an 87-year-old man was having his brain scanned, he died — unexpectedly — of a heart attack. So, the scan recorded his unanticipated final brain activity.
Begin by piling up the layers of complexity in the human body — the layer upon layer of complex interdependent systems.
The human ear can detect sound when the eardrum is displaced by as little as one-tenth the diameter of a single hydrogen atom.
Will robots ever experience empathy or other feelings, or develop a genuine sense of humor?