context matters. most arithmetic operations are not performed in hot loops or are not performed on large vectors. I think its better to have a default where cor

context matters. most arithmetic operations are not performed in hot loops or are not performed on large vectors. I think its better to have a default where correctness and error prevention are gained at the cost of speed. When the speed is needed an explicit choice to use an unsafe but faster performing number type would be the prerogative of the programmer. Its important to have both options available, because context matters.