Futurology, Minds, Philosophy, Politics, SciFi, Technology, Transhumanism

Sufficient technology

Let’s hypothesise sufficient brain scans. As far as I know, we don’t have better than either very low resolution full-brain imaging (millions of synapses per voxel), or very limited high resolution imaging (thousands of synapses total), at least not for living brains. Let’s just pretend for the sake of argument that we have synapse-resolution full-brain scans of living subjects.

What are the implications?

  • Is a backup of your mind protected by the right to avoid self-incrimination? What about the minds of your pets?
  • Does a backup need to be punished (e.g. prison) if the person it is made from is punished? What if the offence occurred after the backup was made?
  • If the mind state is running rather than offline cold-storage, how many votes do all the copies get? What if they’re allowed to diverge? Which of them is allowed to access the bank accounts or other assets of the original? Is the original entitled to money earned by the copies?
  • If you memorise something and then get backed up, is that copyright infringement?
  • If a mind can run on silicon for less than the cost of food to keep a human healthy, can anyone other than the foremost mind in their respective field ever be employed?
  • If someone is backed up then the original is killed by someone who knows the person was backed up, is that murder, or is it the equivalent of a serious assault that causes a small duration of amnesia?
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Science, SciFi, Technology

Kessler-resistant real-life force-fields?

Idle thought at this stage.

The Kessler syndrome (also called the Kessler effect, collisional cascading or ablation cascade), proposed by the NASA scientist Donald J. Kessler in 1978, is a scenario in which the density of objects in low earth orbit (LEO) is high enough that collisions between objects could cause a cascade where each collision generates space debris that increases the likelihood of further collisions.

Kessler syndrome, Wikipedia

If all objects in Earth orbit were required to have an electrical charge (all negative, let’s say), how strong would that charge have to be to prevent collisions?

Also, how long would they remain charged, given the ionosphere, solar wind, Van Allen belts, etc?

Also, how do you apply charge to space junk already present? Rely on it picking up charge when it collides with new objects? Or is it possible to use an electron gun to charge them from a distance? And if so, what’s the trade-off between beam voltage, distance, and maximum charge (presumably shape dependent)?

And if you can apply charge remotely, is this even the best way to deal with them, rather than collecting them all in a large net and de-orbiting them?

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SciFi, Video

Megastructures

Megastructures are big. Really big. You just won’t believe how vastly, hugely, mind-bogglingly big they are. I mean, you may think you live in a big city, but that’s just peanuts to even the smallest megastructure.

Three of the more famous megastructures:

  • A Halo installation: 10,000 km by 318 km (¹)
  • A Culture Orbital: 3,000,000 km by 12,000 km
  • Larry Niven’s Ringworld: 299,200,000 km by 1,600,000 km (²)

Oh, and the Sun for scale. It’s at the end of the video, the small white dot in the middle of the Ringword’s… er… ring. Radius 695,700 km.

Rendered with https://threejs.org/editor/

¹ Do not put a big ring this close to the ground. If you do, the heavy stuff of the ring will pull on the big deep water between land, making the water go very high and over everything, and everyone will have a bad day and not go into space ever.

² A Dyson sphere is the same size, but fully encloses the star instead of just encircling it

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