> best described and understood not as a physical external force
"best described as not a force" is not the same statement as "is not a force".
In physics and mathematics there can be multiple different, complementarity descriptions of the same thing. In fact, if you can reach the same result by two very different routes that seems to make it more robust.
"best described as not a force" is not the same statement as "is not a force".
In physics and mathematics there can be multiple different, complementarity descriptions of the same thing. In fact, if you can reach the same result by two very different routes that seems to make it more robust.