User blog comment:The Milkman/The Writing of the Ending/@comment-30764484-20120605044952/@comment-4950455-20120608040753

"Because it sounds cool" does not equal bad writing. There is no plot hole opened up by the Catalyst (as a proper name) not quite matching the definition of a catalyst (as a scientific term).

And it does bear some' relation to the scientific definition, so it's not like they just picked it out of a hat or something.