I think the real test of a futurist's predictions, in order to determine if we have in fact arrived in the future, is not to see what came true and what did not come true.

No, the real test is to see how many predicting things make you stop and say, "wait, they didn't already have that back then?"

I stopped several times at the 6AM section and realized I thought something predicted had always worked that way. I would think this only works when the predictions are from before you were born, but I was certainly alive in 1988 and I can't for the life of me remember a time without smart thermostats that run on a schedule or coffee makers with simple timers. When you're astonished that something basic now wasn't already common when the prediction was made (within reason), that's when you're definitely living in the future, even if you're still waiting for your flying car.