Representations of integers
0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 ...
Base 10 (the cardinality of the set of fingers)
0 1 10 11 100 101 110 111 1000 1001 1010 1011 1100 1101 ...
Base 2 (the cardinality of the set {on, off}, or {yes, no})
0 1 2 3 4 5 6 7 10 11 12 13 14 15 16 17 20 21 22 23 24 25 ...
0 1 2 3 4 5 6 7 8 9 A B C D E F 10 11 12 13 14 15 16 17 ...