But Wait!

I bet you thought, your journey was over but no!

As you turn the corner and walk to the door of the Vis building you lock eyes with him.

The all-knowing all-seeing wizard of Princeton stops you and you know what's next... I hope you completed your tasks

Wizard: Ah it seems you've finally made it to class. I hope you thoroughly enjoyed your journey around campus and all of the great places it's taken you. However, you knew at the beginning of this journey that you had a few tasks you needed to get done to ensure a smooth and productive week. It's about time to see if you really got your stuff done.

Wizard: Since you obviously went to your office hours and put the effort in to learn something new, which of the following doesn't actually exist in nature?

Inviscid Fluids

Surface Forces

Non-Newtonian Fluids

Laminar Flow