'Seeing' in the Dark
October 31, 2013

Find a space with total darkness and slowly move your hand from side to side in front of your face. What do you see? If the answer is a shadowy shape moving past, you are probably not imagining things.
October 31, 2013
Find a space with total darkness and slowly move your hand from side to side in front of your face. What do you see? If the answer is a shadowy shape moving past, you are probably not imagining things.