Maybe it's just that conservation seems like a self-evident good to me, and I don't really care what evidence anybody tries to present to sway me. I'm not really in the market to be sold conservation, because I'm already buying (we started switching to CFLs a couple years ago, for instance).
Maybe if you're in the air about whether your efforts make any difference or something, I can see resenting somebody using the most favorable possible numbers to make that point (which is what happened here--calling it a stretch is, well, a stretch). But if it's obvious to you as it is to me, it doesn't really matter whether others are perhaps overzealous in their making the point.
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