Here's a #rstats package that helps your variables remember how they got there. Just a quick experiment/proof of concept.
(as always @_ColinFay 's  is great to build a quick logo!)
I would have prefered to avoid `:=` and use `(<-` to do `(z) <- x + y`, but rhs is evaluated before we can "see" it with assignment functions.
Using {doubt} with {elephant} we can define a dubious syntax and do `? z <- x + y` however.
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