Everyone Complains About No Hoverboards But No One Complains About No Flying Trains

Everyone complains about how we don’t yet have hoverboards like the ones in Back to the Future II (yes, I know there are some strides in this direction…but they aren’t enough yet). However, it’s interesting that people don’t complain about other things if they’re going to complain about this.

For instance, Back to the Future III promised us we’d have flying trains by 1885:

That didn’t happen either. Why no complaints?