[ExI] mbrains again: request

[Anders Sandberg]

spike wrote:
>
>
> Here’s the discovery. As far back as ten years ago, I was fooling with 
> MBrain orbit calculations and discovered that an MBrain can move an 
> entire star. This past weekend, I was using the same equations I 
> derived back then and discovered the original comment was an 
> understatement. Not only can an MBrain move a star, it must move a 
> star. Above a certain total area covered by MBrain MNeurons, if the 
> MBrain does not exhaust a certain percentage of the star’s light on 
> the first reflection, the swarm cannot reach thermal equilibrium and 
> maintain temperatures within the solid phase range of known materials.
>
Just absorbing and re-radiating the luminosity as blackbodies produces a 
nice equilibrium temperature as far as I can see - the star's envelope 
gets a tiny fraction hotter, but nothing else. I need some extra hint 
here: has this to do with the orbiting of the MNeurons?

-- 
Anders Sandberg,
Future of Humanity Institute 
James Martin 21st Century School 
Philosophy Faculty 
Oxford University