"Honestly, I can only go so far out in space or time before my brain starts smoking. It's just too big."
Wow, you do a lot better than I! I don't need to go a fraction as far before my brain starts smoking. Isn't is sort of like driving an economy car and feeling a noticeable reduction in power as soon as you turn on the air conditioning?
I've got a daughter who talks quantum physics and string theory. It kind of stretches you. Good analogy there, with the car.