maplealmond

They seem to be able to repair homogenous tissue extremely quickly, but complex micro-structures are much harder to produce. Nerves, lungs, all complex.

Heck even producing Romulan ribosomes was beyond them.

While it was played as a joke, the whole “was she hiding something” had me on first watch going “but everyone is hiding something, surely”

Spock was highlighting this with his trademark precision.