Not to be a technology pessimist but how is this better than natural photosynthesis? Can we realistically hope to achieve better efficiency in storing energy in carbon based structures than with the technique that nature provides us? Well, maybe in a reeealy long perspective. We will probably have synthesised life a couple of times in different forms before then.

"The first thing most of us think about when we hear the word ‘open’ is Windows" - Jobs /// Yup, the first thing that came to my mind.

Patience. Trans-reflective screens are coming: http://www.youtube.com/watch?v=eQvefuCHZds

Playing games can hardly be seen as an achievement. It would be interesting to see pins for achievements in information tech though. Maybe for helping out setting up webservices for the local group or learning a programming language. But perhaps that would be to much to ask from a cub scout?

It might have made an interesting plot if the Navi's actually had engineered the grid themselves, or at least understood it on a more profound level, but the movie seems to suggest that something else made it, evolution probably. I personally find the suggestion on evolution having created it most interesting.