From Longman Dictionary of Contemporary Englishsomething is not an exact sciencesomething is not an exact scienceif you say that an activity is not an exact science, you mean that it involves opinions, guessing etc Predicting the weather is not an exact science. → exact
Examples from the Corpus
something is not an exact science• Opinion polling is hardly an exact science.• Diagnosing power in organizations is not an exact science.• The truth is that eating is not an exact science and never will be.• Therapy is not an exact science because everyone responds differently.something is not an exact sciencesomething is not an exact scienceused to say that something involves a lot of guessing and there is not just one right way to do it Advertising is not an exact science – you’re always taking a risk. → scienceExamples from the Corpus
something is not an exact science• The truth is that eating is not an exact science and never will be.• Diagnosing power in organizations is not an exact science. 