 Philosophers can be as critical as Duhem when it comes to thought experimenting in their own field (see Cohnitz 2006b; Peijnenburg; Atkinson 2003; Thagard 2014; Sorensen 1992a, pp. 7–50; Stuart 2014; Wilson 2016). At least thought experiments in science, the skeptic claims, can be tested by physical experiment. However, this is clearly false, since frictionless planes and universes empty of all material bodies cannot be produced in any laboratory. True, the results of philosophical thought experiments cannot be even approximately tested. But, skeptics say little about why thought experiments enjoy such popularity in philosophy. We are inclined to say that skeptics underestimate the importance of thought experiments for the creative mind in any field.