Science is the observation and measurement of phenomenon. Or at least that's what I learned in JUNIOR HIGH SCHOOL science class.Too bad you seem to have stopped learning in junior high.
Computer calculations are indispensable in most fields of science these days.
I write software for a living. My code runs instrumentation that "observes" and "measures". I get it. But my clients would know if I were "fudging" my results because my results can be "measured" and "observed" i.e.
validated through numerous other methods.
Validation of computer modeling simply cannot be done unless the models move from the computer into the "real world" so that the models can be validated. That simply has never happened in the use of modeling to study evolutionary processes.