Re: Does content provenance matter?

--- On Mon, 5/7/12, PJ Weisberg <pj@irregularexpressions.net> wrote:

But there could be any number of unrelated commits newer than "Bar"
but older than "Revert Bar" on other branches.  Even if you could
trust the timestamps to be accurate (you can't), you still can't
determine a commit's parent unambiguously.

Therefore, provenance does matter, and it must be explicitly recorded because it can't necessarily be correctly and fully deduced from content alone. And git does record inter-commit provenance.
However, git doesn't record intra-commit provenance, as I mentioned in my original message. My question is: why this discrepancy? Either provenance matters, or it doesn't; why record it in one case but not the other?