Adding a road can make traffic worse.
It sounds impossible, but it is known as the Braess Paradox.
When a new route is introduced, individual drivers naturally choose what appears to be the fastest path.
Millions of individually sensible decisions can then produce a slower outcome for everyone.
Remove the road, and total travel time can actually fall.
The strange part is that nobody needs to make a mistake.
Each person is simply optimising their own route.
The problem emerges from interaction.
That idea matters in markets for a different reason.
A strategy doesn’t operate in isolation.
Once enough participants respond to the same opportunity, their responses can change the opportunity itself.
An edge can therefore have a lifespan determined partly by how many people discover it.
The interesting question isn’t always
“Does this strategy work?”
Sometimes it’s
“What happens to the environment if everyone starts doing it?”
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GameTheory# #
Trading# #
MarketStructure#