Probably because of the lack of sleep yesterday, my eyes are sore all day today, and I haven't recovered after several tons of typing. I rubbed my eyes many times after typing a few hundred words while sitting in front of the computer.

I feel like I can't code today, so I can only ask for one more day off. I should be able to get better tomorrow. After this book is over, I'm going to a big hospital to have a good look at my eyes, alas.

Anyway, I have to take another day off today, sorry.