As with many of these things, people are just trying to parrot whatever they've been trained to.
One line of reasoning I've had some success with, because it doesn't threaten someone's identity as a pro-science smart person, is to point out that however safe vaccines were initially, points 1 and 3 guarantee that they will become less safe over time.
As with many of these things, people are just trying to parrot whatever they've been trained to.
One line of reasoning I've had some success with, because it doesn't threaten someone's identity as a pro-science smart person, is to point out that however safe vaccines were initially, points 1 and 3 guarantee that they will become less safe over time.