Audie
Veteran Member
I don’t know of any principle. I’ve never heard of anyone being taught explicitly to distinguish between man made things and other things it’s just a reflex that evolves from our experiences and what people tell us. We think of some things as being made by humans, and some things not.
In general, that is so. But observations of / about the
obvious is not interesting. Out at the edges, that is
another matter.
And yes, part of archaeology is to study and learn
what can be formed by natural processes, and
what requires a directed effort.
The whole "ID" thing of course, centers on the
faith-belief that living things cannot be the result
of any but a directed effort by an intelligent
designer.
So the Quest is for something that (provably)
could not come to be any other way.
Of course you do not know of any principle, nobody
has worked one out. But without a general principle
you just have specific cases, The Buick, say.
That's gotta be man made.