March 26, 2019

Saving the Soul of Physics

““The most incomprehensible thing about the universe is that it is comprehensible, ”Albert Einstein famously once said. These days, however, it is far from being a matter of consensus that the universe is comprehensible, or even that it is unique. Fundamental physics is facing a crisis, related to two popular concepts that are frequently invoked, summarized tellingly by the buzzwords “multiverse” and “uglyverse.”

Multiverse proponents advocate the idea that there may exist innumerable other universes, some of them with totally different physics and numbers of spatial dimensions; and that you, I and everything else may exist in countless copies. “The multiverse may be the most dangerous idea in physics” argues the South African cosmologist George Ellis.

Ever since the early days of science, finding an unlikely coincidence prompted an urge to explain, a motivation to search for the hidden reason behind it. One modern example: the laws of physics appear to be finely tuned to permit the existence of intelligent beings who can discover those laws—a coincidence that demands explanation.”

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