pros/cons of teaching attach()

On Thu, Sep 23, 2010 at 12:50 PM, Martin Maechler

[snip]

Do consider (and teach!) using ?attach("foobar.rda") for *.rda files
which I often find quite preferable to load().
I forgot who (from R-core) introduced this idea,
but I do like it: ?It rehabilitates attach() into a "decent R
function" :-)

This is amazing.  In two sentences, you made working with *.rda files
containing multiple objects easier (which makes save.image suddenly
seem much more useful) and provided a good answer to, "why was it
written if it should be avoided?"

--Josh

Martin