Here is the basic problem with mjd's approach (and I feel free to refer to him in the third person, since he apparently only reads posts that are a direct response to his):
It is the laziest sort of fallacious reasoning to simply claim that one's viewpoint is obvious, as mjd implies with his sniping rhetoric ("err", "duh", "oh, dear", etc.). That is because his claims fail the acid test of obviousness, which is falsifiability.
A claim such as "the sun will always rise in the morning" is obvious not because "everybody knows it", but because if there were ever a time that the sun DIDN'T rise, we would know it. All it takes is a single instance of the sun failing to rise, in all recorded history, to prove the statement wrong, and it hasn't happened (except in the polar regions, of course. Don't overthink this!

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If a claim is falsifiable, then a world in which it is true looks very different from a world in which it is false. This is not true of conspiracy theories, or any of the arguments put forth by mjd. He is careful to choose topics of discussion that lead to endless speculation, because there is no clear way to prove them false. This doesn't, as he appears to believe, mean that they are true. It simply means that thinking people prefer not to waste time speculating on them.
I have called mjd a coward several times, and I stand by that assertion. He is a coward because he never has to take responsibility for his statements, which are unfalsifiable, and he never has to actually DO anything himself, just complain that others aren't stepping up and doing it for him. His behavior is classically passive aggressive.
I think mjd should stop wasting his time trying to convince people that aren't easily swayed by shallow rhetoric, and take his struggle to a more gullible crowd. There, he can be a god among trolls, instead of...well, you get the idea.