Under Stalin, cybernetics and systems theory were banned as bourgeois pseudo-sciences, but starting with the "thaw" under Khrushchev, Soviet theorists quickly embraced cybernetics and systems theory, and there were a series of debates concerning the relations between these subjects and dialectics. People there advanced a range of positions, including the position that cybernetics could replace dialectics. That position was rejected, for among other things, because it was obviously contrary to the teachings of the dialectical materialist "classics." (In the West, the British biologist John Maynard Smith, who had been a long time member of the old CPGB took the position that systems theory made dialectics obsolete). Most Soviet writers came around to the position that systems theory embodies certain dialectical ideas but that one could not reduce dialectics to systems theory.