So we must conclude, unless we favor the idea of a world destined to miscarry through a fault in its construction, that evolutionary
irreversibility and personalization (despite their
implied anticipation of the future) are realities not of a metaphysical but of a physical order, in the sense that, like the dimensions of Time and Space, they represent general conditions to which the totality of our proceedings must conform.
Previous reviews (6 ⇓ ⇓ ⇓ — 10) have defined «abrupt climate change» as occurring «when the climate system is forced to cross some threshold, triggering a transition to a new state at a rate determined by the climate system itself and faster than the cause» (8), which is a case of bifurcation (i.e., one that focuses on equilibrium properties,
implying some degree of
irreversibility).