 As for Grosseteste’s actual practice in his scientific writings, if by an experimental method is meant a method of controlled experiment, then it must be said that Grosseteste makes no use of such a method in these writings. He arrives at his conclusions in his scientific writings on the basis of a mix of considerations.  He appeals to authority and everyday observation (“experimentum” in Latin) and makes use of thought experiments and certain metaphysical assumptions, such as that “every operation of nature occurs in the most finite, ordered, shortest and best way possible for it” (Baur 1912, 75). Nowhere does he describe a controlled experiment as the basis of his conclusions (see Eastwood 1968, regarding Grosseteste’s works in optics). We may grant that Grossetete does cite empirical observation as one factor among others when he assesses the adequacy of certain accounts of natural phenomena, but this is far from employing a method of experimental verification and falsification in the sense of a controlled experiment.