OK, here's where I was going with this.  When I first arrived on this board there was a lot of discussion about how to generate revs.  One very knowledgeable member used the term "flat-spot", referring to the point at the bottom of the swing where the balls arc is parallel with the approach.  Very few members seemed to have a clue about what he was referring to.  My thesis was that more of the current members would have at least some understanding of the term now than did then.  I believe I am correct, though it's inconclusive.  My notion was that the current level of knowledge here is higher than it was 3 or 4 years ago when I arrived (no credit here, I've learned as much or more than any of you).  If, in fact, we are not a "smarter" group than we were then, we at least think we are: rather than mutely passing this thread by a number felt obliged to reply; 3 years ago most would have either passed on by or chimed in that they too would like to know the answer.

I did notice another interesting phenomenon in this thread.  What was the original question?  I asked for, basically, an either/or response; you knew or you didn't.  What I got was a number of replies expanding on various definitions of the term (all of which might be correct in given circumstances.)  I guess human nature would explain this.
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"A little sincerity is a dangerous thing, and a great deal of it is absolutely fatal." Oscar Wilde
Ragnar sure likes to throw his purdy Uranium Buzzsaw.