[ifnspifn]

To be fair, Einstein addresses his inexperience in the field of economics in the first few paragraphs, and argues that the "[facts deriving from the science of economics] belong to [Veblen's "predatory" phase, i.e. capitalism] and even such laws as we can derive from them are not applicable to other phases. Since the real purpose of socialism is precisely to overcome and advance beyond the predatory phase of human development, economic science in its present state can throw little light on the socialist society of the future."

In other words, he claims that a lack of expertise in economics translates into an inability to describe the rules of a capitalist state, but not an inability to describe the resulting observable socioeconomic effects.