Air line pricing.
The machines have taken over and the pricing booking systems are incredibly complex.
But the basics are quite simple. Imaging a linear equation where one line plots how many many people are desperate enough to get somewhere they will pay a given fair, and another line plotting how little the airline is prepared to charge in a desperate attempt to fill the plane.
In spite of all the technology and maths involved these systems give all the appearance of a random number generator.
e.g. My recent return ticket Miami to Alicante and back on a "proper" airline cost less than an Alicante to Glasgow return on a cheapo airline (the politer one).
Biting the hand that feeds IT
