Quote from Wide Tailz:
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Someone needs to spec, install, program, and supervise the bots. Someone else needs to design, manufacture, and support them with parts.
The "singularity" is a fantasy. Entropy is always left out of the equation when geeks begin extrapolating their cyber world into the physical....
Software, being virtual and not physical, does not experience entropy. Once an algorithm is working, as long as there is hardware to implement it, it will not change over time.
If that hardware is capable of reproducing by creating its own successor generation of hardware with the same algorithm, then the problem of entropy is, for all practical purposes, solved.
To use an analogy, look at the Empire State Building. It's stood for almost a century, despite the fact that entropy exists. Now, imagine a robot capable of greater than human cognition with the same staying power. I don't know if that's "the singularity" but it certainly is a big difference from what has existed hitherto.