Laherrere has used a parabolic fractal law, a pure heuristic to model the sizing of reservoirs (and eathquakes), whereas I use the simple dispersive model as shown below. Figure 8: Dispersed velocities suggests a model of aggregation, much like Gabaix suggests for aggregation of cities. ...
Using a simple calculation, including sustained annual growth of only 2% (the IMF states 3% growth or more is needed for a healthy world economy), the bar chart in slide 15 can be drawn to give a feel for the urgency of metals scarcity. Of course in reality we do not experience a sus...