GLS, I'd submit that all machines are in fact only tools.

Where is the machine where iron ore, a tree, a bone, and perhaps a horn are inserted and the 'make gun' button pushed?

Purdey must own a mill by now, and certainly drop hammers have been used to make forgings since the village smithy first invented one.

For machines that do the thinking for the operator, and the pitfalls thus encountered, Google 'Airbus accidents'.




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