ABSTRACT
This chapter contains a very brief introduction to the existence of laws of nature, followed by a thought experiment. It is followed by a short discussion and then a series of questions. When people see patterns and regularities in the world around them, they think that there must be some explanation for this, and so there comes a law. This is explained with the thought experiment with a case of a person named Bertrand. He's testing the gravitational law governing the attraction between massive bodies: F = Gmm'/r2 in his laboratory. The questions are intended to get the philosophy students thinking about the problems. They have used these kinds of questions in seminars as the questions set for seminars, so they also think that they can be used to spark conversation and discussion. The chapter also gives a cursory sketch of some of the ways in which philosophers have responded to the thought experiment.
