That's always the problem with your "unless/except when it isn't" routine. It's a cynical statement, but that's all it is. It doesn't support the assertion, but it does't refute the assertion either. It also neither supports nor refutes alternative ideas and assertions to explore.
Exactly. You mostly get it. MightyMartian is not the only reader of Slashdot and thus, not the only person I'm writing for.
But this is not cynicism. This is purely a logical observation. I could equally assert that the Grays (a particular species of aliens that supposedly anal probe human test subjects) are behind global warming. Or God is angry at us for Facebook and turning up the thermostat. When unfounded, assertions are equally useless to us.
When evidence and reason are introduced, I then actually have to defend those assertions with something. I'm sure it'll be amusing to hear me explain how the Grays are hiding their giant coal burning mothership behind the Moon (obviously NASA is in on it!) or God's giant hand is just as completely undetectable to us as is the vast knob of his thermostat.
Then you can decide just how crazy I am.
And then you wonder why people are still so adamant on their side, despite all the work you've done arguing against them.
MightyMartian isn't going to be rationally talked out of a position he/she didn't get into rationally in the first place. But maybe next time, there will be more to that post (and who knows, maybe some persuasive evidence even!) than just a touchie feelie assertion.