In my past life I was a video editor while 4k was still at its infancy, and my coworker was furious saying that reporters were idiots for saying that 4K was 4 times the size of HD, it was just the name. And I’m like, dude is actually 4 times more and show him a picture of the size comparison of both and he was really ashamed, but I told him it was ok because I was also thinking the same until I read an article about it.