People go on quite a bit about self-determination these days. Some decry the denial of self-determination to "the Palestinians." Others insist that only "the Jewish people" can have the right to self-determination between the Jordan River and the Mediterranean Sea. Israel passed a law declaring that principle in 2018. Unfortunately, I see too little thought behind the term self-determination. What is it? What self are we talking about? What is determination? This and the related issue of nationalism are big topics with an unsurprisingly big literature. I will resist talking about nations and...