The Cyclic Theory of Evolution

By Sean Carroll | November 13, 2009 9:05 am

I don’t think you can define a consistent arrow of time here, but clearly more investigation is warranted.

Saturday Morning Breakfast Cereal.

  • Sili

    You just need a lifting function (I think – I really suck at differential geometry).

  • jim
  • Bjørn Østman

    Again with the knuckle-walking! The Human-ape ancestors likely didn’t walk on their knuckles. Grrr.

  • Mark

    Wow Sean, except for the cowboy hat, he bears a stunning resemblance! The 70’s version is interesting too.

  • chemicalscum

    @Bjørn Østman

    I agree with Björn Kurtén too. I just can bear it you Björns seem to be born to be right all the time.

  • Pingback: La evolucion cíclica()

  • anonameat

    I love SMBC.

  • Refusenik

    There is no there is no arrow of time..the trajectory of time is a construction of human brain in our attempt to understand the Universe which we never can, unless we evolve again with a brain capable of understanding the meaninglessness of our existence
    without angst…this is not to deny the positive by-products of the efforts to understand the ununderstandable…


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Cosmic Variance

Random samplings from a universe of ideas.

About Sean Carroll

Sean Carroll is a Senior Research Associate in the Department of Physics at the California Institute of Technology. His research interests include theoretical aspects of cosmology, field theory, and gravitation. His most recent book is The Particle at the End of the Universe, about the Large Hadron Collider and the search for the Higgs boson. Here are some of his favorite blog posts, home page, and email: carroll [at] .


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