Tyler Cowen's famous book "The Great Stagnation" has been the subject of a lot of conversation in the econ blogosphere. Cowen and others point to stagnant total factor productivity and income growth among large segments of the population as evidence that something is very wrong with the economy these days.
Those on the other side of the debate point to the inability of TFP and income statistics to account for changes in the quality of goods over time and the dramatic benefits we all get from things like the internet.
This post tackles the issue from an engineering perspective. The author has a whole slew of charts and graphs on everything from information technology and solar power to steam generators and jets. It's definitely worth a look!