You guys . . . No. If the only thing I ever teach you is that lichens, moss, and algae are not hurting trees, then this entire endeavor will have been worth it. Who out there is looking at a fucking tree, seeing something growing on it, and stewing over it? I am imagining some man noticing a tree trunk for the first time in his godforsaken life and thinking "hmmm . . . That can't be right." Like not looking at a single other tree trunk, just worriedly turning it over in his head. Lying in bed, trying to fall asleep, can't stop thinking about that weird fuzzy stuff they saw on a tree earlier. Then he googles and sees this and can finally relax. The world is right again. Maybe next time he is out he looks at another tree and *gasp* there it is again! And suddenly it's everywhere: moss in the cracks of the sidewalk, lichen on the telephone poles, a slime of green algae on the subway wall. Suddenly the world is alive, and he no longer has to worry.