What is Big Think?  

We are Big Idea Hunters…

We live in a time of information abundance, which far too many of us see as information overload. With the sum total of human knowledge, past and present, at our fingertips, we’re faced with a crisis of attention: which ideas should we engage with, and why? Big Think is an evolving roadmap to the best thinking on the planet — the ideas that can help you think flexibly and act decisively in a multivariate world.

A word about Big Ideas and Themes — The architecture of Big Think

Big ideas are lenses for envisioning the future. Every article and video on bigthink.com and on our learning platforms is based on an emerging “big idea” that is significant, widely relevant, and actionable. We’re sifting the noise for the questions and insights that have the power to change all of our lives, for decades to come. For example, reverse-engineering is a big idea in that the concept is increasingly useful across multiple disciplines, from education to nanotechnology.

Themes are the seven broad umbrellas under which we organize the hundreds of big ideas that populate Big Think. They include New World Order, Earth and Beyond, 21st Century Living, Going Mental, Extreme Biology, Power and Influence, and Inventing the Future.

Big Think Features:

12,000+ Expert Videos

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Browse videos featuring experts across a wide range of disciplines, from personal health to business leadership to neuroscience.

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World Renowned Bloggers

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Big Think’s contributors offer expert analysis of the big ideas behind the news.

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Big Think Edge

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Big Think’s Edge learning platform for career mentorship and professional development provides engaging and actionable courses delivered by the people who are shaping our future.

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Is Time Travel Possible?

November 4, 2010, 6:59 AM
"General relativity makes a number of big predictions, including the idea that mass warps space-time. If you missed my column on falling into a black hole, the effect of this is that time runs slower near a massive body than far away. You could build a time machine, of a sort, by hanging out near the edge of a black hole, allowing the universe to age must faster than you, and then returning home...to the future. But since you were going to wind up in the future if you just waited long enough, this is kind of stretching the definition of time travel. What we really want to do is go into the past. If G.R. allows us to bend time, will it let us fold it back on itself?"
 

Is Time Travel Possible?

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