The flipside of that take is that if you listened to technologists, then educational TV/CD-ROMs/laptops/the internet/tablets/educational games/digital blackboards/MOOCs/etc. were going to completely revolutionize education - but looking at the evidence, it doesn't seem like students have gained much at all from any of it.

I remember an educator ranting to me a long time ago that the only data-proven ways to meaningfully improve educational outcomes was to reduce classroom size and make sure kids got enough sleep + fed well enough, everything else was just a waste of time.