[Question] Why are people so optimistic about superintelligence?

I’ll quote Slate Star Codex; however, this idea is common and I saw it in many places.

And the whole point of Bostrom’s Superintelligence is that this is within our reach. Once humans can design machines that are smarter than we are, by definition they’ll be able to design machines which are smarter than they are, which can design machines smarter than they are, and so on in a feedback loop so tiny that it will smash up against the physical limitations for intelligence in a comparatively lightning-short amount of time.

(Source: Meditations On Moloch)

So, there is three assumption here:

1) If A designed a machine (lets call it B) which is smarter than itself, B will be able to design a machine which is smarter that itself.

2) B is able to do it quickly.

3) This process, if will be done enough of times, will get to the physical limitations for intelligence.

The first assumption very questionable; If A designed a smarter machine than itself, the new machine will be able to design a smarter machine than A. Maybe, for B, design a smarter machine than itself is much harder than what it was for A (on the one hand, A is less smart and than design a smarter machine is easier; on the other, A is less smart, so it would be harder to him. But its not means that these things are balanced).

The second assumption looks like, unconsciously, “since B is a machine, its doing things quickly.” sometimes its true, but sometimes not. there is a lot of missions which takes a lot of time for computer and design machines not seems to be different.

The third assumption is mathematically incorrect. For example, lets look at the next series:

a(n)=arctan(n)

the first machine intelligence is arctan(1). The second is arctan(2), and so on. Since arctan(x) is increasing function, every machine would be smarter than the previous; but every machine’s intelligence would be lesser than pi/​2, when the physical limitations for intelligence can be, for example, 42.

No answers.