Part one of a intermittent series on interesting ideas that might not be useful.
Today I’m talking about path dependence that leaves us with second rate technology.
The hypothesis is very simple, but very interesting. A society has a problem, and a number of technologies become possible solutions. One of these technologies makes a little more progress than the others – it could be because this technology makes the first step a little easier or just through complete randomness – but this progress meas that it becomes the focus of attention. Funding, the efforts of innovators and entrepreneurs and other resources start flowing towards it because it looks like the best bet. This leads to even more progress which attracts even more. The competitors are neglected and forgotten.
But unbeknown to all, one of these technologies had a brighter future or another has come along too late. If only there had been a little bit of early success it would have been developed into a much better technology than its more favoured rival. By the time this is realised, its far too late to swap over because we’re already locked into the other. The individual incentives to change are far weaker than the collective benefit would be. Because of an effectively random event in the past, we end up in a poorer future.
A very interesting idea and very intuitive (path dependence in general is clearly true) and with large ramifications. But is it useful?
The overwhelming problem is that counterfactuals are hard to find. We can’t (yet) look at alternate universes to see whether the technologies we pursued are inferior to those we didn’t. That makes it hard to confirm the hypothesis on the vast majority of candidates. This also makes it hard to avoid making similar mistakes. There may be innumerable better paths we could have taken, but without some way to recognise what they were, the idea is fairly pointless.
What do we do with the hypothesis then?
There have been efforts to identify cases based on real analysis. Unfortunately most treatments of the idea are content to stop at just two, both of which are far from convincing.
Herewith my column for the