Quote Originally Posted by Snails View Post
FWIW, the real flaw is in Loki's plan.

Hel and Thor have a fig leaf of an excuse: they were both too stupid to understand what the bet really meant at the time. That is a pretty sucky excuse for a god, but it is better than nothing.

The flaw in Loki's plan is that the world would be destroyed by the hand of the three pantheons is not an anomaly, but a known likely eventuality when the world was being put together in the first place, when these kinds of binding bets were being placed. Loki should have considered the endgame scenarios.
You don't know that he didn't consider the endgame solution. We don't know why he originally set this up, and it seems likely that unexpected variables (i.e. the Dark One) made him change his priorities from whatever they originally were.