> However, we can easily falsify a given theory if we can produce even one single observation where the theory does not fit reality [...] Actually, strictly s

> However, we can easily falsify a given theory if we can produce even one single observation where the theory does not fit reality [...] Actually, strictly speaking, it's not that easy. The Duhem-Quine Thesis quite nicely shows how critical experiments aren't quite as decisive as some like to think, especially as theoretical depth increases. A theory can depend on numerous other theories being true. The reason a theory in question is the subject of a critical experiment is because of the principle of economy. Once supporting theories have been sufficiently corroborated, we justifiably tend to trust them more than the theory that we are currently considering.