|Heh. Clever. But I believe...|
A generalist knows more and more about more and more
until eventually s/he knows something about everything.
-- Robert A. Heinlein
-- From Nassim Taleb's Phronetic Rules
Optimal is Not Optimal: The Sweet of Suites
NOTE: I realize that all this is, in fact, a spectrum. At the KISS extreme, brain + opposable thumbs are as simple as it gets, and all the others are to some degree specialized. The kind of optimal we look for will always be the happy middle ground.