Well, here I am, with my first entry at this delightful site. I saw the classification of Exact
Sciences and was wondering
what exactly exact sciences are. I then the saw the tree list offered by the editors of this site. Let me share my thoughts on this.
Mathematics is considered as an exact
science. Physics and Chemistry, Botany, Zoology etc. are also considered sufficiently precise to be called exact sciences though there are some grey areas in each. But statistics? Is it an exact science? When in fact it deals with lot of uncertainities, no doubt with some good mathematical tools?
Agriculture, which even today is so much dependent on weather, which is the most difficult to predict, and so can we consider agriculture as an exact science? I am afraid the answer is no.
Is astronomy an exact science when we really don''t know how the
universe was created, what exactly happens in a Black Hole, whether any other universe is existing, whether the present universe will go on expanding or whether it will start contracting some billions of years from now? While the Big Bang theory is the most successful theory today, there are others too and the question of what was there before the Big Bang cannot be answered by that theory!
Thus to me, nothing other than mathematics is exact really because today''s hypothesis is contradicted by tomorrow''s discovery.