【1 paradox】Why 0.999... is not equal to 1? Written in 2012 The current mathematic theory tells us, 10.9, 10.99, 10.999, ..., but at last it says 1=0.999..., a negation of itself. So it is totally a paradox, name it as 【1 paradox】. You see this is a mathematic problem at first, actual ...