OKAY, so! We've talked about a Valeyard experiment and such for Ten, so what if during that he runs into the Master and they have it out? He'd still be driven by wanting to know what happened, so what if things escalated to the point where some wounding of some dubious degree could happen? (Or, well, worse. Imagine accidentally killing your old best friend/enemy and not getting to properly react to it as one's self?)

What could be even more fun? If this sort of thing happens and then our dual thing occurs...

What do you think? Is that nuts? It probably is.