[inter_netuser]

self-repairing is only a small part.

bots would have to be just as useful/cost-effective as poor humans. Apparently manual labour at $2/hr is cheaper than robots still.

[klyrs]

If the environment is too hot for a human to work outside, the labor cost goes to infinity as the work will not be completed even if somebody takes the money

[inter_netuser]

we have remote controlled robots even today for such things. still requires a human operator.