Some thinkers see that the world is far more insane than is acknowledged, and that our narratives about society, the future, or the self don’t make sense. They develop a theory to explain things. Here’s a list of some of those theories (as I interpret them), explained in extremely concise terms as best as I could manage: The List of Thinkers and Their Core Ideas: 1. Peter Singer We would ruin expensive shoes to save a drowning child we walked by, but not forgo expensive shoes to sav...