Quote Originally Posted by whiterabbit View Post
Odin can discover when Celestials are coming from the heavens to vanquish Earth but he has trouble discovering the identity of a woman who's wielding his son's weapon? Bull crap writing. He couldn't send his crows to watch her 24/7, use the Asgardian scrying pools, or ask Heimdall?
Mjolnir blocked Odin and Odin's grand visers and Heimdall from seeing who the new Thor is.

And the hammer isn't the same hammer. During a nasty fight with Bor, Mjolnir was broken. Thor went to Dr. Strange to repair the hammer, and Strange summoned part of Thor's lifeforce to the hammer to repair it. So Mjolnir has not just Odin's enchantments, but Dr. Strange's and Thor's. And it has clearly outgrown Odin and determined Odin himself is unworthy.