Today on Quirks and Quarks Bob McDonald interviewed Dr. Lawrence Krauss, author of A Universe from Nothing. Krauss argues that Nothing is actually a quantity that is radically different than conceived by classical philosophy. He then proceeds to explain that Nothing, i.e., a vacuum devoid of all particles, actually has mass that can be measured. Diving into the murky waters of quantum physics he discusses the nature of gravity and how it has the ability to create things from nothing.
As I listened I was fascinated by his account, however I found that I disagreed with his description of Nothing. He was saying that Nothing was not actually no-thing but rather Something. Having a raging sea of energy, or so-called "Dark Matter" is not Nothing, there seems to be yet another language game at work here, a subtle redefining of the word. Krauss uses the word Nothing to refer to a state that is in reality something, his science is interesting, his reasoning ics flawed. Krauss, I believe, has made a category mistake in his explanation of Nothing.
Throughout this interview he repeatedly bashes creationists and religious believers. However he takes it a step further by even rejecting philosophical explanations. This shows an example of a scientist overstepping his bounds (for more on the limits of Science, see Dr. van der Breggen's class on the Philosophy of Science). Regardless of one's views on the origins of the cosmos, it is important that one thinks critically about the nature of Nothing, I would caution against those who define Nothing as Something. Give the interview a listen, and think critically!