>>830, I think I grasp the distinction. May I illustrate with an anecdote from my family?

In high-school, a science teacher played a prank on his class by telling them that the direction, clockwise or counterclockwise, that the water runs out of the toilet when we flush is dependent upon the gender of its last user. Most of the kids, including my younger sister, went home and attempted to verify this by experiment.

When she told our stepfather, a man illiterate his entire life, who also could not perform basic arithmetic, he laughed and said "How does the toilet know?"

My sister, as many youths are, was ignorant. My stepfather, while not a learned or worldly man, was not.

Is this the distinction, or have I failed to grasp something?