Yeah I've only read a little bit of Heinlein, so I thought it was high time that I gave what is generally considered one of his best works it's due. Classic "libertarian sci-fi", but also seems fairly prescient with generative AI. I'm about halfway in, it's a pretty fun read.

the army at the bottom of the gravity well is at a strategic disadvantage . consider the energy it takes to move material to the moon, whereas moon people can drop rocks on Earth at will. now consider national strategic planning for the 2nd half of the 21st century 🪨