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User: rayan

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  1. The most impressive thing on How Astronomers Used the First Concorde Prototype To Chase a Total Eclipse (vice.com) · · Score: 3, Insightful

    I walked through this Concorde at Le Bourget airport a few months ago. The thing that stunned me was mentioned in the article: they hit their tracking start point, a point in space above Africa, at Mach 2 within *1 second* of plan on manual flight controls. One of the posters at the exhibit described how the pilot would adjust the speed at different points prior to rendezvous in order to track to plan. This was done by hand in 1972. With all the tech today we could only be 1 second better. That's pretty impressive.

  2. Re:Found the article on arxiv on Physics Is (NP-)Hard · · Score: 1

    "Determining dynamical equations is hard" by Toby S Cubitt, Jens Eisert, Michael M Wolf.

    "The Complexity of Relating Quantum Channels to Master Equations" by Toby S. Cubitt, Jens Eisert, Michael M. Wolf

    Obviously he was born to do this. Wonder what contribution his parents made to quantum information theory, other than him...

  3. Re:Does Google really care? on Google & Verizon's Real Net Neutrality Proposal · · Score: 1

    The Register article exposes the disadvantage to smaller content providers being created by the private arrangements between large content providers and large ISPs, but the equally important strategic consideration is the disadvantage to smaller ISPs being created by the proposed net neutrality rules (as I understand them), namely that the smaller ISPs *have to* carry all traffic presented which means that a) they need a lot of bandwidth up front, which is not a problem for existing large facilities based ISPs like Verizon and friends, but is definitely a big problem for new entrants, and b) they will not be allowed to skim the cream of the traffic if they get into the retail game. Both ways, this creates barriers to entry on the ISP side as well, which is of course the whole point of it from Verizon's perspective. So basically they are building a cartel/club/whatever to make it extremely difficult for someone else to grow big.