Laptop Shopping


Imagine you're buying a laptop. You care about two things: price and battery life. You don’t know which laptop is the best, but you can easily spot laptops that are obviously worse than others.

For example, suppose:


Laptop A costs $1,000 and lasts 4 hours.

Laptop B costs $800 and lasts 6 hours.

Laptop C costs $900 and lasts...