User:SOTO/Forum Archive/The Panopticon/@comment-78.8.96.155-20130508105959/@comment-78.8.96.155-20130508113307

It's not a spoiler, since Gaiman simply states his theory on the origin of the Matt Smith-era Cybermen. The same theory that has been debated on this wiki for a while. He doesn't actually say whether it's confirmed in the episode itself.