How a Weird Theory of Gravity Could Break Cause-and-Effect

New research has found a critical flaw in modified gravity theories: They allow for effects to occur without causes and for information to travel faster than the speed of light. This is bad … for modified gravity. “It may change this … research area considerably, forcing it in rather new directions,” lead researcher and Tufts University astrophysicist Mark Hertzberg told Live Science.

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