The second involves empirical propositions about the world around us that were not necessary truths, instead they are regarded as true with greater or lesser probability.
In addition to being a student and professor of philosophy, Albert Blumberg also fought for economic and social reforms.
Blumberg also ran for public office on several occasions, for example, Communist candidate for Mayor of Baltimore City, 1939.
As well Blumberg was several times under suspicion by various governmental organizations for communist activities, becoming one of the first convicted under a provision of the 1940 Smith Act.
During his senior years Blumberg remained politically active, although not in the communist party.