Original: Human hands are perhaps the most universally recognized example of chirality : The left hand is a non-superposable mirror image of the right hand ; no matter how the two hands are oriented , it is impossible for all the major features of both hands to coincide .
Simplified: This difference in symmetry becomes obvious if someone attempts to shake the right hand of a person using his left hand , or if a left-handed glove is placed on a right hand .