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@Double_R
If the framers of the constitution couldn't have possibly considered X at the time of it's drafting (because X didn't yet exist) then it can't possibly be up to them to determine whether the constitution applies to it.
The classic collectivist propensity to engage in "will over reason" thinking.
"It doesn't matter what is real, it matters who decides"
Diagnostic question: If the founders or those contemporary to them had claimed that "arms" included strawberry shortcakes and actively infectious small pox samples does that mean that must be true? If the answer is "no" then it seems that it's not up to them to determine whether the constitution applies even when they did consider X at the time of drafting.
i.e. it's never up to them.
It's not up to you either. Nor is it up to judges, judges are just given the job of determining the objective meaning. That doesn't imply that the objective meaning is defined as the whims of a judge, nor could it be implied given the definition of "objective".
It is determined by the meaning of those words when they were written. That is related to intent by virtue of both being determined by the context of the debates during drafting but disconnected in that the meaning persists despite the hypothetical confessions of differing intent. e.g. if Benjamin Franklin was preserved in stasis and when he woke up started to insist that the 5th amendment guaranteed the right to steal everyone's left shoe, that would not matter.
Therefore, it is up to those of us living people to figure out to the best of our abilities, using logic and reason, whether it applies.
Agreed
Note that this is very different from "the words on that piece of paper say so if you interpret every word literally and without that context, therefore we're stuck with whatever the framers didn't think about".
The context relevant to meaning is found in the debates and the meaning of the words at the time.
You not liking the consequences in the modern setting does not change the meaning.
Also notice that this is very different from "if X didn't exist at the time the constitution was drafted then X is automatically, without any thought or reason, excluded".
You still have not provided an explanation as to the relevance of:
"Still didn't exist and therefore could not have possibly been considered at the time they wrote the 2nd amendment."
Your attempted explanation that it is relevant because "that means it's up to us to use reason to understand" has failed (see above).