When do game-changing spoilers stop being treated as spoilers?

[SvennoJ]

Math.Pow(2, Metacritic score) = number of days before spoilers are ok

A perfect 10, almost 3 years
A solid 9, about one and a half years
A great 8, close to 9 months
A passable 7, 4 months
A meager 6, 2 months
A crappy 5, 1 month

Math solves all questions!