I wonder how supply siders deal with immigration. A weakness of supply side economics, as opposed to demand side economics, is you have to forecast demand farther in advance if supply side techniques are to work, because you have to provide the infrastructure, inventory buildup, etc. In advance. It is not as nimble of a strategy and requires more capital sooner, which flies in the face of the time value of money. I really think that this is an inherent weakness, in that it inevitably adds an additional forecasting variable and thus additional imprecision. So the supply siders are saying, how many méxicans are we going to need, but the demand siders are one step ahead by calculating what to do with the méxicans who are already here instead of building fences and shit.
Righties, Republicans, Libertarians, etc. Have economic strategies that are reactive instead of proactive. There are some advantages to this, such as not going off half-cocked and etc, but I really think the tendency to look backwards accounts for the slight yet definite outperformance of lefties, Democrats, etc, over the last hundred years or so. Democrats have some silly programs that Republicans need to audit, and numerous government agencies can be (slowly but definitely) eliminated. But Republicans need better economists because the numbers just continue to refute their positions.
