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>People are more comfortable with a stranger injecting a liquid into their bodies when they know everyone else let it happen as well.

>5. False associations, confusion of causation and correlation

I dont think they accept vaccinations because others do it.

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The vast majority of people don't have the background to understand the mechanism of action of vaccines. 100 years ago the effects of vaccines were easily observable, but now these diseases are rare enough such that a regular person can't rely on observation alone to make a decision to get vaccinated. They need to trust that the doctors know what they're doing.

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