Necessity is the mother of invention.
So says Plato.

Experts say eat a banana a day, but they’re usually under ripe or over ripe.
South Korea has an idea.

You’ll find a pack of bananas,
packed so one will be ripe each day of the week.

A little trivia:
People in the USA eat more bananas than monkeys. 
Makes sense, I don’t know anyone who ever ate a monkey.