Celebrating 10 Years of Foundational Questions in Physics and Cosmology!
FQXi’s most popular online content from the past decade

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FQXi launched in May 2006 to catalyze and support research on the foundations of physics and cosmology. To celebrate our 10th anniversary, we're showcasing our top 10 most popular articles, videos, podcasts, essays and the 10 hottest discussion topics at the frontiers of physics, for the past decade. Thank you to the FQXi community, including our contributors, funders and visitors to our site.

Top Articles | Top Videos | Top Podcast Stories | Top Forum & Blog Topics | Top Essays



"Is Time an Illusion?"

Julian Barbour

"What is Consciousness?"

Christof Koch and Giulio Tononi

"What is Time?"

David Eagleman, Paul Davies, Tim Maudlin, Raissa D'Souza and moderator Jennifer Ouellette.

"Neural Relativity"

David Eagleman

"Boltzmann Brains and Eternal Inflation"

Sean Carroll

"Does Time Exist?"

Julian Barbour and Tim Maudlin

"Complexity: Living Systems from Cells to Cities"

Geoffrey West

"Is Consciousness a State of Matter?"

Max Tegmark

"Is the Multiverse Real?"

Max Tegmark


Hot Topics from Forums and Blogs

Alternative Models of Reality
Zeeya Merali

If you have an unconventional, alternative model of reality, then this is the place to discuss it. (This is for contributors who have preliminary ideas and would like feedback, but do not have an academic paper or arXiv preprint and have not given a conference talk based on their ideas.) Edited on 31 August to add: Thanks to Peter and John for commenting on my recent Nature article: "The Origins of Time and Space," which surveys some of the recent ideas on reality, and could serve as inspiration for this thread. :-)

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Georgina, I just read your notes & comments. Your very wise thoughts on states found not existing until detection go to the root of the Copenhagen interpretation (In extremis; is the moon there when we're not looking?). More sensibly it equates to Von Neumann; "The 'meter' is part of the system" which I've recently found more profound than most have thought. I think you'll like my essay which develops that to it's conclusion. I look forward to yours.




Or even three or more different ways, or aspects of the same phenomena I suggest! I hope you're well, and look forward to catching up with your latest work/ essay.


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These are the 10 most popular essays, receiving the most hits from visitors, over the past decade. You can also read the winning essays in each of our contests, as chosen by expert judging panels, here

Compilation volumes containing expanded versions of the winning essays from some of our most recent contests are also available for purchase.

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