: I see no reason for the Prophets to particularly lie, but I think it's
: possible given what we saw in Broken Circle that the Stoics might have
: expanded beyond their homeward without the aid of the Forerunner legacy.
: In Broken Circle they appear to be at a mid-20th century Earth technology
: level, plus a knowledge of genetics that far surpasses anything a 26th
: century power has at their disposal.

Speaking of headcanons, someone blew my mind with the "one of Cortana's future copies is the Ascendant Justice AI" theory the other day. Had never even heard of it before then, but it was presented rather convincingly.