Significados de crackpot notions em inglês

Yet another collection of gaudy billboards advertising Meyer's crackpot notions of femininity-what'snot to like?

I don't like the official encouragement of crackpot notions.

Even after stripping out the more crackpot notions there are still more theories for what caused the extinction events than there have been events.

Such crackpot notions, promoted by far-right ideologues such as Pamela Geller and Frank Gaffney, used to be confined to the margins of the internet.