150-or-so years ago, Karl Marx developed a scientific method for understanding socio-economics and translating common political goals towards collective action. Most of the conclusions he came to through this scientific method have borne out in the decades since, a few have not, but the method itself is, I believe, concrete.

As the years went on, additional theoreticians - especially Lenin and Mao - have further developed his theories.

But I think the key is to never be dogmatic - that different times call for different approaches, that sometimes you need forced collectivization, but sometimes you need the New Economic Policy. Sometimes you wage a protracted peasants’ war, sometimes you elect Sewer Socialists.

A lot of people can get too caught up in the tendencies and sub-tendencies. I believe that all Marxists should be part of a single Socialist political party where disagreements are handled internally by rigorous debate and elections among Communists.