[Delta 21]

There is just no telling what you dont know, but agree fully with the first half of your statement.

[Tax-chick]

There is just no telling what you don't know ...

I disagree. For example, I know that I don't know anything about the practical use of guns in almost any situation. I recognize the names of various brands and models of guns, but I don't know why any in particular is better or worse than another.