The consequence of the Bay of Pigs failure wasn't an acceptance of Castro and his control of Cuba but, rather, a renewed determination to bring him down by stealth.
I don't put my ideas in a meeting for acceptance or rejection, I put them in the market for success or failure.
We all learn lessons in life. Some stick, some don't. I have always learned more from rejection and failure than from acceptance and success.
Once we accept our limits, we go beyond them.
Failure is not fatal, but failure to change might be.