…we are sort of (exactly) made from cells…they have very important key jobs, and if they stop doing that it’s bad enough, let alone when they screw up, start doing their own thing and refuse to die.

Imagine in a city if a random building just started filling with solid foam, then the buildings next to it did the same (terrible analogy ofc, lol) how long until that street is useless? The section of the city? The whole city? The whole district?