> Say we've seen 2 1/8 decks.

Don't know anyone who plays BJ using 1/8-deck estimation! :-)

> In this case 8.5
> aces should be the number. Of course, we can
> approximate it to 9 (or to 8) but in order
> to be exactly the same method we should use
> 8.5.
> See what I mean?

I do, but I'm not going to lose any sleep over it! :-)

Don