User blog comment:Eightynine!/just a nice ending :)/@comment-3075024-20120914034020/@comment-972068-20120915173548

That's why its ending works. Total Recall is sort of about dreams too, and there actually hasn't been any confirmation whether or not its ending is real or not.

Wizard of Oz started in the real world then she suddenly got transported to this magical world. A dream was necessary.