I loved that generalized definition of “tools” I found. it broadens my way of thinking to consider, say two surfaces as two domains and not only a hammer as a tool but a nail as a tool too.
and, the one who hammers as well.
the hammerer ♂️ and the hammer are temporary tools but the nail as the tool that interfaces the two surfaces (domains).
it brings me back to the old notion of machines. the wedge, pulley, etc.