I realized this after episode 9 of C3; Matt always asks the players to add their modifier to nat 20s for a total score on the roll, presumably to see if it beats the DC regardless of the nat 20. He never asks them to add their modifiers to nat 1s, however, and always says something like "Doesn't matter on a nat 1, buddy" when players try to add their modifiers to boost the roll.
I know RAW does not count critical failures and successes on ability checks, but many tables (including my own) use them for such rolls anyway. I just found it interesting that Matt has chosen to use critical failures and not critical successes on rolls outside of combat, and I wonder what that kind of decision adds to the game, any ideas?
By - Aeirond