[Tichy]

I can't envision a possible world in which Popper is a Marxist, the attack on historicism seems to preculde it. But I don't have any particular rancor about Popper's politics, and I haven't studied them carefully. I've always thought of him as a garden variety liberal. I just think his interpretation of Plato is one-sided.

Popper's best known as a philosopher of science. He coined the idea of 'falsification': that a scientific theory can only be legitimate if it is possible to be falsified (i.e. that it's possible for there to be concrete evidence *against* it).

In terms of his relation to Plato I've always thought of him as the opposite of Leo Strauss. Both point to the manipulative or elitist features of Plato's politics (rule by the 'best', the legitimacy of 'noble lies' told to the people by the leaders if they move society towards the Good, etc.) Strauss lauds these things in a roundabout way: he's a subtle (or subtilizing) reader, and doesn't treat the Republic as a blueprint for a state, but a meditation on politics more generally. Popper straightforwardly attacks them as the seeds of tyranny. I'm not a fan of either of them as readers of Plato.