Although what CA says may be true, Its perhaps wiser to err on the side of caution and increase if necessary
Increase what, DP?
Can you imagine someone cooking 10 or more portions of your CTM in a 5 or 6 ltr(9" base) tall stockpot Cory? ;D
Huh? I do that all the time! And I multiply ALL of the ingredients accordingly. And, as I said, provided your pan and heat source are up to it, that should (scientifically and logically) be the case.
However, if our cooking conditions are not up to it, then we will start making all sorts of spurious adjustments to compensate!
And what you don't need is some mystical, religious, or illogical response getting in the way of scientific and logical reason (which is the exact opposite of what Phil was trying to suggest with his Galileo reference)