>> I totally agree, in principle!  If there's a graph of message id's,
>> the mail clients ought to make use of it over Stringy matching!  Just
>> like I wish Eliot and Bert would use the graph of ancestry in
>> Monticello rather than stringy name matching for "branches"..   :)
>
> In case this is not just a meant-to-be-funny remark, you should start a new thread for that topic.
>
> For my part I can't see much of an analogy here.

The "In-Reply-To:" hierarchy is to the MCVersionInfo hierarchy as the
Subject-Line of an email is to an expanded MCVersionName of saved
package versions.

Each is a loosey-goosey String-matching strategy replacing a hard,
UUID reference hierarchy.