45 years ago the Mallory Battery Company of Canada developed the most powerful D cell utilizing a porous anode patented construction analogous to what you read here...only nanotechnology did not exist then. Why wasn't the advanced technology exploited at that time? Politics and the NIH syndrome...so that's one answer why battery advances have not been made over the years.
That is definitely the promise of some of these batteries, and it's about time! I have always wondered why battery technology has not evolved as quickly as other technology, why we've had what seems like the same battery life for years. It's good to see these inventions moving forward at a fast pace.
I know you were being funny, Amclaussen--I just thought the implied math was also funny. And I think you're right about how many people, including engineers, underestimate the power and breadth of application of Murphy's Law. I like your memorial wall idea.