There was a huge improvement in the period of roughly 2005 through a few years ago, at which point programs seemed to be making only slow, incremental progress.

There was a huge improvement in the period of roughly 2005 through a few years ago, at which point programs seemed to be making only slow, incremental progress. At the current rate, it looks like we're talking at least a decade to reach full professional status. I guess Facebook is claiming they're upending that, but that remains to be seen.