Socialism: Utopian and scientific

As background, let me cite the fact that in the Communist Manifesto of 1848, Marx and Engels had already differentiated Scientific Socialism from Utopian Socialism of three kinds:

Council Implementing Regulation (EU) no 1285/2009

THE COUNCIL OF THE EUROPEAN UNION, (5) Having regard to Council Regulation (EC) No 2580/2001 of 27 December 2001 on specific restrictive measures directed against certain persons and entities with a view to combating terrorism ( 1 ), and in particular Article 2(3) thereof,