I know what you are saying here, but to be fair, protein synthesis is a highly regulated process and to say "it happens spontaneously" ... just seems wrong to me.
Are you picturing something about the speed of it? Because that's the wrong definition of spontaneous...
quote:
adjective
1.
coming or resulting from a natural impulse or tendency; without effort or premeditation; natural and unconstrained; unplanned:
a spontaneous burst of applause.
2.
(of a person) given to acting upon sudden impulses.
3.
(of natural phenomena) arising from internal forces or causes; independent of external agencies; self-acting.