A huge swarm/sphere of solar collectors uses up precious materials (silicon, etc) that are far more valuable to use in ultimate compact reversible computers—which don’t need much energy to sustain anyway.
You seem to be bottomlining. Earlier you gave cold reversible-computing civs reasonable probability (and doubt), now you seem to treat it as an almost sure scenario for civ developement.
No I don’t see it as a sure scenario, just one that has much higher probability mass than dyson spheres. Compact, cold structures are far more likely than large hot constructions—due to speed of light and thermodynamic considerations.
Stars are disassembling all over—mostly by exploding, but some are getting slowly sucked dry by a black hole or other compact object.
What kind of practical dissembly process do you expect future technology to use, such that it is more efficient than what we already see?
Dyson spheres suck:
they require tons of energy to build,
they are wasteful from an architecture standpoint by dispersing matter and thus increasing communication overhead (compact is better)
they are inefficient from a cooling perspective, which is key to maximizing computation (landauer’s principle)
Are you saying Dyson spheres are inefficient as computational substrate, as power collection, or both?
Because to me it looks like what you actually want is a Dyson sphere / swarm of solar collectors, powering a computer further out.
A huge swarm/sphere of solar collectors uses up precious materials (silicon, etc) that are far more valuable to use in ultimate compact reversible computers—which don’t need much energy to sustain anyway.
You seem to be bottomlining. Earlier you gave cold reversible-computing civs reasonable probability (and doubt), now you seem to treat it as an almost sure scenario for civ developement.
No I don’t see it as a sure scenario, just one that has much higher probability mass than dyson spheres. Compact, cold structures are far more likely than large hot constructions—due to speed of light and thermodynamic considerations.