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How many bots can do plumbing, carpentry, or electrical work? Zero.

If we ever get to that point, we’ll just start churning out bots and giving them away for free to do the work.

How many plumbers, carpenters and electricians do we need?

Enough that they can command fairly substantial wages. People are always going to need residential, commercial, and industrial space.

The information by then will be so common, that it will be a question of not how to fix, but whether or not it is convenient/one is willing to fix