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“Philosophers Have Been Preparing for this Moment for Thousands of Years.” ~ Yuval Noah Harari.


Bari Weiss, Op-Ed staff editor and writer at The New York Times, will join Yuval Noah Harari, historian, philosopher and international best-selling author of “Sapiens” and “Homo Deus” for a thought-provoking evening of conversation. Harari’s new book, “21 Lessons for the 21st Century” untangles political, technological, social and existential issues. It clarifies the most important questions humankind faces today, and empowers all of us to help answer them. His provocative insights on the most pressing issues of the day have won him fans ranging from Bill Gates and Barack Obama to Natalie Portman and Janelle Monáe.

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The universe’s ultimate speed limit seems set in stone. But there’s good reason to believe it might once have been faster – and may still be changing now.

By Stuart Clark

The speed of light in a vacuum is the ultimate cosmic speed limit. Just getting close to it causes problems: the weird distortions of Einstein’s relativity kick in, so time slows down, lengths go up, masses balloon and everything you thought was fixed changes. Only things that have no mass in the first place can reach light speed – photons of light being the classic example. Absolutely nothing can exceed this cosmic max.

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