I don't think the courts have, yet, given you jurisdiction to decide
what "a reasonable man" was.

"is", not "was", and it is the court's decision.

wanna bet several years of your life on it?

ask the clown in CT who killed a man in a fog, and seriously injured the man's
adult son, and then claimed it was "an act of god" because he had his radar on.
the clown -- in his sixties -- did jail time.