Because the first time I met him alone, he was hidden in a secondary part of his office in shades, playing electric guitar so I got curious about his hands. Musicians hands are so interesting.
So it's kind of like cloning? And you'd have to use two cellular samples to get a whole person or else you end up bio-mush. Only I expect you usually would use exclusively Time-Lord genetic material but your human friend was more convenient.
...I'm really into sci-fi, before you ask. And he's a really good tutor.
Speaking of combustible... How do I address you so I can talk to you without spoiling him? Is there like a designation system? Because I figure, if you're not going to be him then I can tell you things I can't tell him - as long as you promise not to spoil.