Stuck in two different era's

Has anyone noticed how the further we get technologically, the farther back we go intellectually? I've noticed a lot of the thinking nowadays was all of the thinking in the past. One great example is the Earth being flat. I thought Chris Columbus figured that one out for us, apparently not. Then there's the anti vaxxers who believe that these vaccinations do more harm than good. I honestly don't understand how we can be so advanced in an age where our thinking is so medieval