hypothetical error event: multiple count_down() functions in engine's function list?
solvent / insurance: one instance only? proc_kill?
count_down()
count_down()
count_down()
count_down()
count_down()
count_down()
// close on n not down to other n
(Of end and beginning, Mistress Cosmos, is blind, persistent, and uncaring, with respect to primates, appendages, and digits.)