1+1=2 是真理. so are all proven mathematical theorems under the cor

来源: 于 2019-08-09 11:47:46 [旧帖] [给我悄悄话] 本文已被阅读：次

人 is made of cells. So far all cells die. thus all 人 die. =>真理 as of today. Someday, via genetic modification, some

人 currently living may become immortal, then 人都是要死的 is no longer 真理. 真理 is in general limited by time and domain(space), as mathematic theorems are limited by axioms and assumptions.