rnd33

And people in America stating that healthcare is not free is a rant-trigger for me.

Everyone here knows that it's not "free" but subsidised by taxes. That's what "free" means when talking about healthcare, free at the point of service, and free as equally available to everyone.

How else would it work? Are the doctors without pay and with no equipment?

Because time has a direction (for some reason it doesn't seem possible to go backwards though), and a value. I can't think of similar analogies for 'thought' that makes it fit with the other 3 room dimensions.