By the power of truth, I, while living, have conquered the universe.
Posted by: Heliossoileh1
I'm not seeing anything there that suggests Mendicant Bias is sending you to a world the Forerunner supposedly exiled themselves to. That just seems like baseless speculation, to me.
Given other Terminals detailing the Forerunner-Flood war, the Forerunners were not yet capable of travel between galaxies, but built a number of structures outside the Milky Way (loke the Ark).
John is a Reclaimer, Bias clearly states he's using you to prove he has atoned from betraying the Forerunners: "But I would have my masters know that I have changed. And you shall be my example." It therefore makes sense for him to send John to the Forerunners to.
Bias tried to do something similar to this in Contact Harvest when he almost destroys High Charity by launching the Dreadnaught, he says he will bring the Reclaimers safely to the Ark.
His intent has been made clear to have humanity reclaim the fallen empire of the Forerunners and prove that he has changed, having failed twice he had a chance to send John to the Forerunners themselves (as a fragment of him was on the Ark for the 100,000 years following the Forerunner-Flood war, where one of the Terminals state he infiltrated the Portal's systems).
[Edited on 10.31.2010 6:06 AM PDT]