This is why the researchers have to proceed with extreme caution. All of the assumptions have to be testable through consequences that are observable in our world.

It's always struck me as odd that "arrogance" is applied to science, which is based on the ultimate humility of laying all of our cards on the table and agreeing to accept the consequences of empirical evidence that might overturn our beliefs.

In consequence, supernatural knowledge has already produced a plurality of definitive answers. That strikes me as arrogant.