Hi I think it is saying: If you believe that parallel realities exist, then you can number them - 1, 2, 3 ... If you don't believe in them, you can - perhaps - still talk to your colleague by saying: - Let's say there are possibilities 1 and 2. If you insist, we can say there's also a possibility '1½' (the fraction between) but, in that case, it is very difficult to say what that means It's a little like a metaphor (and is similar to Platform 9¾ in Harry Potter, if you know that) Dave
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