Terry,
I think we all understand what rationality is. That was not my question.
above all, that one must never seek to get away with contradictions.
What is "wrong" with irrationality and contradictions? It is a chance universe in your view right? Maybe even multiverses. How do you know that in some universe contradictions might be the norm, even demanded as you have demanded logic in this one.
What is the basis for your certitude that rationality and non-contradiction is "correct"? And you still haven't answered where did logic and rationality come from in your worldview?
It means a commitment to reason, not in sporadic fits or on selected issues or in special emergencies, but as a permanent way of life.
If we blew up a 5 gallon bucket of paint, why should you demand that the paint splatter on one wall be used as a standard to judge the other nonsensical splattered walls? Doesn't make any sense. It's arbitrary.
The rats in the video clip I posted above seem to do just fine without much rationality. The greatest rational minds in all of history, Einstein, Newton, Di Vinci have never discovered a way to eradicate them.
Your worldview is self defeating on its own merit and implodes upon itself under examination. It should be rejected as irrational, arbitrary and without basis.