I’m no biologist, but I’m pretty sure that this photo I took a while back has a lot of lichen:

That flakey & coral-looking stuff growing on the branches should be lichen.

Huh. When I took Calculus II in community college, the professor introduced sum notation and like 2/3 of the class was like “wow that’s cool I didn’t know about that”. I don’t remember ever being formally taught it before that but it still surprises be how few people where already familiar with it.

Not really an answer to the question, but does anyone else think that the phrases “take a shit” and “give a shit” seem swapped? You say you’re gonna take a shit when you are giving one to the toilet, and you say you don’t give a shit when you are unwilling to take shit.