Zhengquan Zhang <zhang.zhengquan@gmail.com>: ... [snipped] -- I have a theory that it's impossible to prove anything, but I can't prove it. Good one, but lacks originality? Cf. Goedel Escher Bach? -- Any technology distinguishable from magic is insufficiently advanced. (*) http://blinkynet.net/comp/uip5.html Linux Counter #80292 - - http://www.faqs.org/rfcs/rfc1855.html Please, don't Cc: me.