 The foregoing discussion focused on socialist critiques of capitalism. These critiques make the case that capitalism fails to fulfill principles, or to realize values, to which socialists are committed. But what would an alternative economic system look like which would fulfill those principles, or realize those values—or at least honor them to a larger extent? This brings us to dimension DII of socialism. We will consider several proposed models. We will address here critical concerns about both the feasibility and the desirability of these models. Arguments comparing ideal socialist designs with actual capitalist societies are unsatisfactory; we must compare like with like (Nove 1991; Brennan 2014; Corneo 2017). Thus, we should compare ideal forms of socialism with ideal forms of capitalism, and actual versions of capitalism with actual versions of socialism. Most importantly, we should entertain comparisons between the best feasible incarnations of these systems. This requires formulating feasible forms of socialism. Feasibility assessments can play out in two ways: they may regard the (degree of) workability and stability of a proposed socialist system once introduced, or they may regard its (degree of) accessibility from current conditions when it is not yet in place. We address the former concerns in this section, leaving the latter for  section 5  when we turn to dimension DIII of socialism and the questions of socialist transition or transformation.