Someone I know well said that I ought to do some research before having the Covid jab, and then some more on why Russia had every reason to attack the Ukraine.
He couldn't see that "doing some research" doesn't really mean shouting into a Net echo chamber to reinforce the dumbarse opinions you already have, unlike the research carried out by gov'ts, drug firms, drug agencies etc etc to develop new products and drugs which starts on an unbiased baseline and is done by true experts in their field.
As the post above says, so many self-styled experts now in every field of human endeavour.