One very interesting thing I noted on the page:
Negative numbers were usually represented using distinguisable features like color. Positive rods were usually colored red while negative rods were usually colored black.
Wasn't there a really long thread not very long ago about whether color was ever a distinguishing characteristic of two otherwise identical characters?
Sounds like the numerals on my bank statements, except the other way round. But I don't think that would justify encoding as separate characters red negative Arabic digits, or red positive Chinese rod digits.
-- Peter Kirk [EMAIL PROTECTED] (personal) [EMAIL PROTECTED] (work) http://www.qaya.org/
