If any team has a question about the rules or guidelines for an XPRIZE competition that's under way, please send them by email to the appropriate competition contact - firstname.lastname@example.org, adult.literacy@xprize,org, email@example.com, etc. XPRIZE has provided teams that mechanism for that purpose, and it allows us to keep track and respond promptly. Posting questions to the world in these forums will likely make you wait longer for a reply, and puts you at risk of getting volunteered incorrect answers from non-XPRIZE participants.
Questions about the guidelines for the NRG COSIA Carbon XPRIZE should be sent to firstname.lastname@example.org, not Ben Bain. Ben is not involved with the Carbon XPRIZE.