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David Denkenberger's avatar

Let's approximate industrial production by cement production (~2 billion tons/year) because it is actually chemically processed (we move a lot more ore and aggregate). We can already make solar cells about one micron thick, and that would be the majority of the area in a Dyson sphere (powering small em cities). Then doubling every month, it would only take about two years to build a Dyson sphere. Robin points out that traveling to Mars with current rocket technology would be an extremely long subjective time for a sped up em. However, the ems could invest a lot of effort transporting material much faster than current rockets can do. This could be accomplished by fusion, laser sail, etc. So I think the early em era would not only cover most of the earth, but also envelop the sun.

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riona's avatar

i have tried long path tool to fix the problem

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