Yes, but positive feedback for an obviously-doomed project may lead a person to spend a lot of time on it and fail. Of course you never know -- many successful

Yes, but positive feedback for an obviously-doomed project may lead a person to spend a lot of time on it and fail. Of course you never know -- many successful ideas were ridiculed initially. But still, HONEST feedback beats see-everything-through-rose-colored-glasses feedback any time.