What exactly is the argument or implication in the last two sentences? There are many works of art that use "blunt" instruments. Say the Venus of Willendorf or a Serra sculpture, though that depends on what you mean by blunt. Even in literature blunt tools are use such as a pencil.
So, I think english is an "analytical language", although I wouldn't know what it means, it inspires me to assume, that by analyszing the sentence you can make out that extremely could refer to something else than the uniqueness, isn't it? EG the phrase could mean, something was unique because of one of any number of extremes, unique by extremity. Sure, that should be uniquely extreme, but what I said shows something else. If there are different qualities that could be unique, wouldn't it make sense to quantify that? Of course, if a logic is so weak it cannot have the peano axioms, you cannot advance beyond uniqueness. (What about missing all-quantor in propositional logic and uniqueness in predicate logic? I'm just stabbing in the dark, really.)
Does it accept 'nearly unique' ?