There are three points of prioritization here: you can use other peoples' code, manually vet all the code you're running, or accept that you need to trust a social network to vet stuff for you. Pick two. This is not a solvable problem.
EDIT: I've been rate limited, so the point is: unless you're Terry Davis, you're not going to be able to write software of any real complexity. Few people are going to even bother to vet the standard library, let alone the compiler, the runtime, etc etc.
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