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Canal Mania
The 1790s speculative frenzy over British canal investment — the archetypal installation-phase bubble whose crash destroyed investors and left behind the infrastructure of inland waterways.
The canal mania of the 1790s poured speculative capital into British waterway schemes that could never have generated returns sufficient to justify their cost. Investors bid up shares in canals that would never be completed, connecting towns that did not need connecting, serving traffic that did not exist. The mania ended in the predictable way: prices collapsed, investors were ruined, and the canal companies that had been the darlings of the London stock exchange became cautionary tales. And yet — the canal network survived. The speculative capital that funded the mania built an infrastructure of inland waterways that the British economy used for decades. The frenzy was irrational. The infrastructure was real. Both were true at the same time.
In The You On AI Field Guide
The canal mania is Perez's archetypal example of the installation-phase dynamic. The frenzy was not a bug but a feature — the mechanism by which capitalism installs infrastructure at a speed and scale that rational investment could never justify. Patient, rational investors would