 Leibniz was often mistakenly credited in the 18th century with the view that organic nature contained no gaps, i.e., between any two different-looking organisms, another can be found. Though such a view might seem consistent with Leibniz’s Principle of Plenitude — that the universe is as full as possible — and his Law of Continuity — his denial that nature makes leaps (GM 6: 240) — it is inconsistent with his view that not everything possible exists, but only what is compossible with other existents, and Leibniz held no such view in any case. Kant describes the idea of perfect continuity in any case as mere intellectual prejudice, since observation of nature does not objectively support it. However, he allows the “law of the ladder of continuity among creatures” has regulative importance in natural history (KRV A 668/ B 696).