Last week I went to a rather interesting little conference in Budapest organized by Ádám Tamás Tuboly at the Hungarian Academy of Sciences. Given its focus on “sociological” aspects of logical empiricism, most of the papers were focussed on Philipp Frank (about whom I learned a lot) and Neurath (about whom I learned even more, though I knew a lot more about him than Frank to begin with). I was a little surprised at the neglect of Richard von Mises, an outsider I’ve always found very attractive, especially in this connection, and especially of Felix Kaufmann. Neither, admittedly, belongs to either of the two notorious “parties” of the Left or Right Vienna Circles, so both are somewhat lonely eccentrics on the fringe. But then so is Wittgenstein (though of course he’s a much bigger name than either Mises or Kaufmann), to whom Martin Kusch devoted a superb paper focussing on the intellectual context of Wittgenstein’s many remarks on color and color perception, showing in detail how some, at least, of Wittgenstein’s ideas were formed in response to the experimental psychology he encountered in Cambridge when he was a student there before the First World War. Continue reading