I saw on a few Wikipedia pages that René de Saussure apparently “opposed the criticism of Louis Couturat that Esperanto lacks recursion”. However, the previous sentence talks about the principle of “neceso kaj sufiĉo” and I cannot see the link between affixes and recursion. Furthermore, Saussure’s book Fundamentaj reguloj de la vort-teorio en Esperanto seems to talk about derivation, not recursion, and the book it quotes is Couturat’s Étude sur la dérivation en espéranto which, again, seems to be about derivation and not about recursion.
So when did Couturat make that claim? Is Wikipedia telling a lie or I'm simply missing something?