Quantitative subjects are progressive and new discoveries or technological advancements make past theories obsolete; on the contrary, old philosophy aims at stu

Quantitative subjects are progressive and new discoveries or technological advancements make past theories obsolete; on the contrary, old philosophy aims at studying the world we are all in from different perspectives and with different methods or goals, so that it is cumulative indeed: past theories go out of fashion never becoming obsolete, still being re-usable in need, at different times or epochs.