When someone suggests "let's do X", you cannot reply with "but that would cause Y" This is reasonable. E.g. sure a person can google how to build a house, but

When someone suggests "let's do X", you cannot reply with "but that would cause Y" This is reasonable. E.g. sure a person can google how to build a house, but also sure that at planning phase they’ll mess and conflict with a half of good rules of thumb. Or forget them right after reading, because there is no habit nor knowledge in their head, and all that info is pretty transient. Pro is not the one who has read an article, but the one who can tell a couple of their own notes about it. Otoh, gp is also correct that tests should check how you are doing in a real life situation. So maybe use both ways of testing?