It's getting there. Are you suggesting that, since it hasn't happened yet, it can't possibly be happening? I haven't died yet, but I'm reasonably certain it will happen. Your logic implies that, as long as I'm alive, I can reasonably believe I'll live forever. See what conundrums you get into when you're totally fixated on the politics of the controversy to the exclusion of the science and logic?!?!
If we're losing gigatons of ice every nanosecond, shouldn't there be a real measurable rise, not some statistical chart showing a probable rise, in the sea levels?
Please cite the source that says we're losing gigatons every nanosecond.