You argument is in bad faith: because something is effective but not perfect doesn’t mean we should get rid of it. If people are not wearing a mask properly, we should explain why it matters and how to do it — not throw out a good idea.

Same thing for lockdown: it works. It might not be enough, or there are too many edge cases in Australia, but dismissing distancing because the first attempt wasn’t enough, or perfect is the opposite of what Hacker News stands for.