Probably at least some. It's not such a big deal, though. Pretty much everyone in modern society is operating on a set of ideas that were 99.99% not their own.

Probably at least some. It's not such a big deal, though. Pretty much everyone in modern society is operating on a set of ideas that were 99.99% not their own. The trick is evaluating the placed-ideas and then replacing them with better ideas if they aren't working.