The number of iterations Raptor has seen is kind of insane. V3 seems like it’s a substantially different beast compared to the original.

I suppose that’s par for the course when bringing a previously lab-bound type of engine into practical use, but still. Did Merlin see iteration at such a pace prior to being fitted on Falcon 9’s? Raptor looks to be on track to be in a considerably more refined state when Starship goes into service than Merlin was at during the same point with Falcons.