In the article they bring up many questionable aspects of this idea, which also seems to lack in scientific support.

And so the bicameral mind remains a highly controversial idea

You have 150% chance

This isn’t exactly the best math either.

Or for propane tanks. They need to have an area underneath to catch the gas if they star leaking. And the bumps can be some kind of foundation for putting the tanks. It looks like it could hold two tanks next to each other.