I've learned from early years in college. Using calculus, 1 + 1 is not really 2( in terms of accuracy)! but rounding it to the nearest integer is 2. Can someone comment on this? if it is true is there any way we can we can add 1 and 1 to an exact 2, (of course not by arithmetic) in terms of calculus or any other higher math principles. and can you show me the solution?