slope. The origin of this law lies in the random multiplicative process built into the model. Whilst such results have been known since the time of Gibrat, the present framework allows for a stable power law in an arbitrary and irregular global dynamics, so long as the market is `fair', i.e., there is

this point. While it is straightforward enough to put an offset in, this is not normally necessary when looking at natural phenomena. In the 1930s Gibrat, an engineer, pioneered work in economics that studied work on proportional growth processes that could produce log-normal or power law distribution