Yeah, we assess probabilities as best we can in formulating our most basic ideas about reality. After all, this entire thread may be simply a hallucination or a dream (caused by the random firing of neurons) that I am experiencing and all of you may not actually exist. Mudcat Cafe may not really exist. This could be an extended dream in a life in which I am actually an accountant in Schectady whose wife has just purchased a chihuahua, and who has fallen asleep at his desk imagining that he is Little Hawk. Or maybe it's the other way around, and I am a hallucination that you are experiencing, Bill.

But probably not... :-)

Now, where in the World did you get the idea that neurons fire "randomly"? (smile)