Your parents were IRRATIONAL, and in a way, you should be thankful

becuase without the reptilian/invertebrate brain, encased by the more sophisticated layers of "brain" (ego, and of course, SUPEREGO), NONE of us would be possible. You must have an OLD SYSTEM, before a NEWER, more COMPLEX one.
"What say ye"?























Well, that seems to be the general plan for chordates. However, in the nonchordate phyla, there are several arrangements for neurological structure. Some of those, octopus comes to mind) have been demonstrated to be fairly sophisticated even capable of demonstrating learned behavior.
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The octopus seems to have more neural-nucleic mass (sometimes called thoughts, memories, and decisions), than other creatures I can think of...
edit:speaking of molecular biology, it seems I've lost enough sleep lately to deplete myself of electryltes. Just another... rhetorical question?