The nature of the past hypothesis

by David Wallace This is a special video presentation that Scientia Salon is publishing at the request of Barry Loewer, Director of the Rutgers Center for Philosophy and the Sciences [1]. It is part of a series of videos published after that came out from the 2014 conference on the philosophy of cosmology held in Tenerife, Spain … Continue reading The nature of the past hypothesis

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The multiverse as a scientific concept — part II

by Coel Hellier [The first part of this essay can be found here.] Inflation The comparison of cosmological models with high-quality and detailed observations of the early universe has led to the "inflationary'' version of the Big Bang. This hypothesizes that, very early in the first second after the initial quantum fluctuation, only about 10-35 … Continue reading The multiverse as a scientific concept — part II

The multiverse as a scientific concept — part I

by Coel Hellier The multiverse concept is often derided as "unscientific'' and an example of physicists indulging in metaphysical speculation of the sort they would usually deplore. For example, commenters here at Scientia Salon have said that the multiverse is "by definition not verifiable and thus outside the bounds of empirical science,’' and that "advocates … Continue reading The multiverse as a scientific concept — part I