Barry Schwartz presents a very thought-provoking talk on “The Paradox of Choice” at TED. The basic idea is that, paradoxically, while we think that more choice will bring more freedom and thus more happiness, this is not in fact the case. More choice leads to more stress, more self-doubt, decision overload, and ultimately less happiness.
Long, but very worth watching. If you’re a fan of Richard Dawkins, Sam Harris, et. al. you’ll be familiar with much of the discussion, but getting to see these four in conversation with each other is great.
“Powers of Ten” is a classic; if you haven’t seen it before you owe it to yourself to invest the ~10 minutes and check it out. The film was produced in the mid-1970’s and is a very powerful visualization of cosmic distances vs. microscopic distances (and where humanity fits in):
Here’s a fascinating talk by Sean Carroll, a well known CalTech physicist, about the nature of time. He’s speaking to a group at the FQXi conference in 2011. Carroll’s From Eternity to Here is sitting on my to-be-read bookshelf and should be interesting, if it’s anything like this talk.
Nick Bostrom, a professor at Oxford and director of the Future of Humanity Institute, presents the Simulation Argument. More about the idea can be found on the on the Wikipedia page, and you can see more about Bostrom on his TED Talk profile page.