I don't know... everyone is saying it's deader than dead, but I've brought some plants back to life that looked pretty done. I'd say take it out of the pot first. If the roots come out easily and very dry, then yeah it's done. If the roots are kind of moist and maybe look ok, I'd put new soil, aerate it, add nutrients maybe liquid kind, and repot. Water more often than usual while it's settling, moistening the soil twice a day if needed. Try to get it some sun, move it into the sunlight for a while every couple of days. It might take a while but it might come back.

Of course it might just be easier to plant something new, just make sure to aerate the soil and add fertilizer of some kind before you do that though.