Funny enough, my boss has a PhD in Evolutionary Biology. She never tells people because they start referring to her as Doctor, and she hates that. I don’t think I’ve actually ever heard her bring it up on her own.

And that can’t be good for the oven.

I’m seeing quite a few strings there around the nozzle and fan ducts. Another thing that can cause that curling is wet filament, which will also cause the stringing. So you might also try drying it.

Do you see the same curling with other filaments?

This can sometimes be caused by uneven cooling. I was able to resolve it by using a fan shroud that cools on both sides of the print.