You wouldn't survive very long. The oxygen level was insanely high back then, and for some reason very high oxygen levels can make you go blind if you breathe the air for too long. Also it would have got unimaginably cold at night even in the tropics (virtually no greenhouse gases) so you'd probably freeze to death.

But also you'd starve to death because there would be nothing to eat since fruit and vegetables wouldn't have yet evolved.

You would probably have better luck surviving on an alien planet than Earth several hundred million years ago.

If we were alive back then, either we took those bacteria with us, or we would cease being alive fairly quickly; I don't think our intestines work without them anymore

"Tree" isn't a phylogeny, it's a strategy. They definitely were trees.

Fungus pillars? Like giant mushrooms??

Check mate humanity

Now imagine the atmosphere is ~%30 O²

Suddenly it makes sense why some trees only disperse seeds after a forest fire.

Agree with all points except the availability of plastic.

There might have been more wood, but the mass of plastic is enormous. I remember that it's more than the mass of all animals. The value should be from this study, but it's closed access, so I can't check.

https://www.nature.com/articles/s41586-020-3010-5

Well, in programming, garbage cleanup routines (which are important so data in memory that's no longer needed is released - get it wrong and you either have a memory leak where the longer your app runs the more RAM it consumes, or you have bizarre bugs that are hard to replicate cause memory was released early) in general are actually quite tricky to get right, so usually you use APIs built into whatever programming language you're using. You don't have that luxury inside a video game's environment. Imagine if they got it wrong and your character is mistakenly treated as some dead monster and poof it's gone.

60

More like three hundred (unless you mean how long it lasted).

with wood, the problem was with lignin which is tightly crosslinked, meaning that it's insoluble and organism willing to eat it has to secrete some enzymes to break it down in smaller bits that can be absorbed

depending on plastic, this first step might be easier or even happening on its own. there are already bacteria that feed on nylon but nylon starting materials are easier to digest for them

Wasn't there some effort to guide that particular evolution? Or was it really just one of those,"holy shit look at this" discoveries?

Now my curiosity is piqued; I may have to look that up later today.