Wow. These guys wasted a crapload of time on this. Why would I want to print ANY of the things they've shown, when I could just open the app on my phone instea

Wow. These guys wasted a crapload of time on this. Why would I want to print ANY of the things they've shown, when I could just open the app on my phone instead -- at least that way I can actually interact with the data? Why are you killing trees for no reason?