(April 29, 2013 at 4:07 am)Esquilax Wrote: Like the thirteen regeneration limit. I'll bet anything that if the show is still profitable when the thirteenth actor leaves, they'll write around that in a heartbeat.In my mind, they've already solved that dilemma.
River Song gave up all her regenerations to save the Doctors life. She'd only regenerated twice, so that means she had 10 regenerations left. At best, one could argue that the regeneration energy from her 2nd regeneration was enough to heal the Doctor, so he has 10 more. At worst, he at least has a few more to use.