kreynolds said:
You sick, sick, sick little man!!!![]()
Of course not, and UK's system does not promise nor contain such math. It makes no claim of the sort. That's where the "art of DMing" comes in. However, can you deny that bad eyeballing could adversely affect a player's enjoyment of the game?
I not little, I'm bulk-impared

I think bad challenges are about on par with bad traps. Bad plots are worse though. I suppose anything that lets my DM focus on that is useful.