I thought that as a businessman you needed to know something about statistics! [ Rolling his eyes, the Doctor continues. ] Let's say that twenty people get Ported in each month. If half of them are each from a different universe, then that's ten universes per month. So over a year-long period, that'd be a hundred and twenty different universes. That's undershooting it, by the way, sometimes we get months where more than twenty people show up.

Now, with all the way the universes could go, with some set in the past and some set in the distant future, some based around magic and others based around science, d'you really think all of them would be prejudiced against clones?

[ The Doctor continues talking, shrugging slightly as he continues. ] There's bound to be some duds in there. But there are duds in every batch. And if you specifically go out to find the duds without paying attention to the rest of everything, then of course you're going to think the entire multiverse's against you.