> In a pond, there is a growth of algae. Every day, the patch doubles in size. If it takes 67 days for the growth to cover the entire lake, how long would it take for the algae to cover half of the lake?

This is a common riddle used to demonstrate the properties of an exponential growth. It is a quite fantastic riddle, but outside of mind experiments, literally useless in every day life.

On an unrelated note, this is what Spanish farms look like:

Somehow, I absolutely do understand, why globalists are trying to break the human race. I wasn't able to take that image off of my head since the first time I saw it.