They're about as subtle as Rosie at a Chinese buffet.
But what has whether or not one is a ‘newbie’ (an incestuous little in-group term if ever there was one) or his imagined behaviour at a Chinese Buffet, (is that one of those feeding trough thingies the hoit poloi swarm at?), got to do with the topic?
But perhaps someone will actually alight on this thread and find the reference useful, in which case my purpose will have been achieved.
As for the rest; “Where ignorance is bliss ‘tis folly to be wise.”