I thought this text was really successful.  For once someone proposed problems with something and then gave a legit, achievable solution.  In almost every paragraph, Tufte stated a problem he had with powerpoint, and then stated his solution clearly.  It was refreshing.

The only flaw I found with this is Tufte suggested a program that would be ideal, so why doesn't he use all the energy he put into writing this text and create said program?