Let me start out by saying I didn't think "Powaaqatsi" was anywhere near as good as "Koyaanisqatsi". The message was nothing new and both the visuals and music were far, far below the standards of the first film. With that said, the last thing I needed to hear was Mr. Glass and Mr. Reggio endlessly ramble on about what a masterpiece they created.
The short running time of "Impact Of Progress" is mostly spent as follows: Philip talks about how great Godfrey is. Godfrey talks about how great Philip is. Philip talks about how great Philip is. Godfrey talks about how great Godfrey is. I can't stand these self-congratulatory mini-docs that have the sole purpose of inflating egos.
Only watch this if you want to see a couple of snobs throw around words such as "autodidactic" and "recontextualizing" to show how clearly superior they are. Good luck.