'21st-Century' in the title is doing the work of distinguishing, not describing. An open-licensed textbook with homework is the actual novelty, and that's worth putting in the title.

Definitely trying this next time I check into an Airbnb. The old flashlight trick is tedious.

Still rocking an older Haiku alpha install on a netbook. Might be time to spin up a VM and see how far this beta has progressed.

What do you use the netbook for?

100 billion times what fusion can produce is wild. Hard to explain that with any stellar model.