Delighted to see this finally make the front page. I submitted it just a few days ago, but it was quickly buried: https://news.ycombinator.com/item?id=10309001
My favorite part starts at 40:50: https://www.youtube.com/watch?v=WJzi9R_55Iw&feature=youtu.be...
Paraphrasing:
“Our goal is not to measure "answers right per test", or "test passed per year", but rather Sistine Chapel Ceilings per lifetime.”
That gives me goosebumps every time I think about it.