A short review of [Acemoglu et al. 2001](https://economics.mit.edu/files/4123), [Acemoglu et al. 2012](https://www.aeaweb.org/articles?id=10.1257/aer.102.6.3077), and [Albouy 2012](http://davidalbouy.net/AJRrev.pdf), as well as a demonstration of an …