A rogue tries to pick a lock. "Roll a sleight of hand Check" that DM says. The roll is low.
So What happens next?
Does the DM say "you failed to pick the lock"?
Is this a dead end in the game?
It doesn't have to be.
If a player is rolling the dice, failure must always an option, but success or failure, the game must go on.
We consider the relationship between risks, successes, and failures this week on Dungeons & Tangents.
During this podcast, we discussed the content of this article by Game Creator Rob Donoghue: http://walkingmind.evilhat.com/2018/01/17/risks/