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<< I've many times been getting on the freeway, signal blinking, only one car on freeway visible, and said to myself, "Move over! Don't you see me? What else am I going to do???" >>
I'm not sure exactly what kind of situation you're describing, but if it's what I think it is, then the signal was useless anyway. >>
OK, so you're the only car on the freeway, in the slow lane. I'm trying to merge, signal blinking, and you refuse to give me room to merge, saying "Duh, why are you signaling,
where else are you going to go?"
Agreed, the signal was useless, but only because it was ignored by those it was intended to inform.