Your deficiency is that you're not a time traveller. You can't know what the long term consequences are no matter how many studies you do, until the long term

Your deficiency is that you're not a time traveller. You can't know what the long term consequences are no matter how many studies you do, until the long term has come to pass. You can however guess, and make good guesses (I'm planning on getting the vaccine). But it does no one any good to fail to outline unknowns that are steelmanned by "we can't possibly know".