Well, if you want to do it right, you don't just "not discuss" the orthodoxy, you go out of your way to make discussing the orthodoxy very clearly forbidden on the research circle. You put "we won't allow anybody to talk about lightning" on the first paragraph of your institution's code of conduct. You actively censor people discussing it, and do all you can to erase it from their history. On a related matter, people…
Nah. That makes it a forbidden fruit attracting rebellious youth like nothing else. I've seen it happen in communist Poland regarding the Katyń massacre for example. You don't outright say "we don't talk about Katyń here" - that would just make it more popular and indirectly admit you are wrong.
What you actually do is invent your own version of facts that works emotionally just as well (Germans did it), spread it everywhere, and punish people in a way that is reasonable and provides plausible denial. For example my father (very interested in history since he was a kid) repeated a class in high school because he failed history - giving the "wrong" answers on exams.
It's not that they will kill your family - there's no need usually. It's just you're making everything harder for yourself.