I feel guilty for borrowing Lake of Darkness from the library instead of buying it.

That's how it looks to me too.

The Seventh Continent.

I was too dim for The Thing Itself so I will probably struggle with this one.

I see that you write some young adult stuff, that might be more my speed.

Loss here is the plain difference between how much future reward it thought it would get and how much it did get. No cross entropy or anything.

Reward is given for going fast and staying close to friend.

They definitely do something that resembles zoomies.