As I've gotten older I've noticed how my day job depends more on communicating effectively than solving hard technical problems.
The best technical idea doesn't serve you if you can't communicate it to others.
One of my friends once submitted an essay where the introduction and the conclusions were coherent, but all the text in the middle was just unrelated garbage. It's an extreme case, but in many cases if the extremes and the subtitles are fine, the quality of the middle is not so important.
(BTW, it's "poring" not "pouring".)
I wonder how easy it is now for Western high school teachers to outsource things like lesson planning or grading tests to lower-cost countries? Startup idea: build a marketplace like that. There has to be a market for it.