I've heard this said before, and it's really true: public figures spewing any old nonsense without any evidence, but with complete confidence, and in the end you switch off, because noise/signal ratio is just too high
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high probability that any talking head opening their mouth are spewing complete nonsense
the worst thing about this is not the grain of salt, but the fact that political candidates become completely opaque. You have no way of knowing their real convictions (if any) except by their track records - and that only works for veterans.