I am reading the book "Sweating Bullets: Notes about Inventing PowerPoint (2012)" on the iPad https://news.ycombinator.com/item?id=15745202 https://news.ycombi

I am reading the book "Sweating Bullets: Notes about Inventing PowerPoint (2012)" on the iPad https://news.ycombinator.com/item?id=15745202 https://news.ycombinator.com/item?id=15745202 and it seems that PowerPoint kind of "solved” the first half of interactive classroom information exchange: presentation (output). Note taking (with laptop or tablet) can be think of as the second half of the problem (input). Perhaps we need to rethink the challenge of "realtime face-to-face group interactive information exchange" in a more integrated way and come up with more revolutionary solutions.