Note you missed: Maya and co. [b]created[/b] the exos specifically in order to use them in the device, then eventually made themselves into exos in order to enter the Vex Timestream. (At least that's what I remember) Cayde was her security guard and had a thing for her. [quote]Hearts were for a girl I knew.[/quote] -Cayde-6, mission Cayde's Stash He became an exo because his debt would then be payed off (he had a lot of debt) and the full story of the aftermath is in his journal. I always thought Chioma actually died which caused Maya to enter the machine. Or was presumed dead. Otherwise, interesting. I've always accepted that it was Maya as a fact, but this brings a new angle. [spoiler]I've quoted the sources I can remember, but the rest I can't since my memory for thes ethings isn't great. Sorry to anyone who was interested[/spoiler]