He actually meant "nary" which in old english is defined as "not one." The "bi" prefix is naturally a sexual orientation conjugation he chose to append.

I assume that makes me one of those that can again .

Neil

Are you joking?  It is hard to tell.

To answer the question (serious or not, some may not understand), we normally use base 10 because there are 10 symbols in our integer counting system, 0-9
Base2 has 2 - 0 and 1
Base16 (hex) has 16 - 0-F

so

Base10	Base2	hex
0	0	0
1	1	1
2	10	2
3	11	3
4	100	4
5	101	5
6	110	6
7	111	7
8	1000	8
9	1001	9
10	1010	A
11	1011	B
12	1100	C
13	1101	D
14	1110	E
15	1111	F
16	10000	10
17	10001	11
18	10010	12
19	10011	13
20	10100	14
21	10101	15
22	10110	16
23	10111	17
24	11000	18
25	11001	19
26	11010	1A
27	11011	1B
28	11100	1C
29	11101	1D
30	11110	1E
31	11111	1F
32	100000	20
33	100001	21

As a modern byte has 8 bits (historically not always the case) there are 256 different values a byte can have - sqrt(256) = 16 so we can describe a byte with two hex numbers - which is why you see hex used so often when talking about the value of a byte (essentially it is base256 with 00-FF as the possible values)

Funny how some people get angry about "Bitcoin 2" proposal (not in this thread, I guess, but somewhere on reddit).



The truth is, Bitcoin is 100% voluntary. I like my current Bitcoin and don't need to care much about Bitcoin 2. If, however, there begins a noticeable market with Bitcoin 2 guys (will never happen, but let's imagine that), I can decide to voluntarily join this market. Or not. Either way I have choice and everyone's happy.

Also there's base 58 as used in all our BTC addresses
It's also a bastardisation of base 58 to avoid having 0, I, O and l

0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuv
becomes
123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz

... I presume everyone does know the original joke right?
There Are 3 Types Of People In The World, Those Who Are Good At Math And Those Who Aren't ...

All number systems are base 10 if you think about it.  The word "base 10" is horribly ambiguous for meaning base-ten. 

+1 Can't wait for this