experiments showing that many species can solve complex problems confirm Darwin's initial hypothesis

And if, as he thought, humans are descended from simpler creatures,then perhaps our minds lie at the far end of a continuum,differing from theirs in degree,but not in kind.Recent experiments showing that many species can solve complex problems confirm Darwin's initial hypothesis.Elephants use objects to reach inaccessible places.Crows make their own tools,and can use water displacement to get a reward.Octopuses can open jars after watching others do so,and can even remember the process months later.Such tasks involve considering aspects of a problem separately from the immediate situation,and retaining the strategy for later use.