How did you get 11 and binary ten?

Regev:

   1 and 1 are 11 if you concatenate them, which is the default operation if you regard them as characters and not as digits. "1 and 1 are 2" is right only in the decimal domain and not in the character domain, or in the binary domain. Also 1 and 1 may be zero (and lots of energy) if the first one is an electron and the second one is a positron. That's in the particles domain.

Ed Wrigley:

   Just write down 1 twice and what you get? 11 That's the whole idea. Now if you add binary one to binary one, you get binary two, which is written as 10 in the binary funny way of writing numbers.

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Author: Joseph Regev
Date: 1 May 1997