(..) more of its celebral capacity. % may not seem like much but it's a lot if we look at all we've done with it. The only living being that uses it's brain better than us... ...the dolphin. uses up to % of its celebral capacity. And in particular, this allows it to have an echo-location system that's more efficient than any sonar invented by mankind. But the dolphin did not invent the sonar. It developed it naturally. And this is the crucial part of our philosophical reflection we've today. Can we therefore conclude that humans are concerned more with (..)