you're being too logical about it.. and about abstraction no
less. No fun*tongue emoticon* Play a game of opposites and you
can see how it can work: What would be a tangible abstraction?
Art. You can touch it yet it's an abstraction. What would be an
intangible specification (which is one of the opposites of an
abstraction)? Or something intangibly concrete (another opposite
of abstraction)? A good example of intangibly concrete for many
would be logic for example. Can't touch it, but it's considered
concrete - as in "fact". It's not as ridiculous as it at first
seems. -- *Its not that it CAN'T be seen as a pleonasm if you
like.* - It can and that viewpoint would not be invalid. But it
wouldn't be complete to me, as it's stopping short of other
options.