Roller Skates are my favorite example of human brain plasticity. If someone handed you a pair of roller skates and told you what they planned to do it them, there would be no reason for you to believe that anything other than comedy and injuries would ensue if the fool was to actually try to put them on and roll around in them on concrete. But instead, after only about 15 minutes of trial and error the human brain says "Oh, cool. I get this now! I like this! This is very efficient!"
Roller skates prove how truly unbelievably capable human brains really are.