Here's a quote:
Holly also demonstrates the true arrogance of those who equate their tangential knowledge with expertise. One theme I promote in this blog is proper humility when dealing with areas of knowledge in which one is not an expert. This does not mean you cannot have an opinion - but one should fairly account for the consensus of expert opinion and be wary of those who casually dismiss it.I like that last bit enough to make it a rule of thumb:
Before going into the details of some personal opinion, people should summarize the expert consensus. If they can't do that, they must be told to STFU.
Time is money - life is short - lurk moar - and so forth.