Early members included the mathematician Hans Hahn and, within a few years, they were joined by Rudolf Carnap, Herbert Feigl, Kurt Gödel, Otto Neurath, Friedrich Waismann and others.
Na primer gravitacijsko konvekcijo, so lahko videli v razširjanje vira suhe soli navzdol na mokra tla zaradi vzgona sveže vode v fiziološko raztopino.