 Proponents of the teleological approach (Gleb Krzhizhanovsky, Valerian Kuybyshev, Stanislav Strumilin) believed that the plan should transform the economy and proceed from future structural changes, production opportunities and rigid discipline.Among the party functionaries, the former were supported by a supporter of the evolutionary path to socialism, Nikolai Bukharin, and the latter by Leon Trotsky, who insisted on an accelerated pace of industrialisation.One of the first ideologues of industrialisation was Evgeny Preobrazhensky, an economist close to Trotsky, who in 1924–25 developed the concept of forced "superindustrialization" at the expense of funds from the countryside ("initial socialist accumulation", according to Preobrazhensky).