This was my face when I foolishly asked my maths teacher what pi was - he spoke for a long time, I understand nothing and I was late to my next class.
I’m not a teacher, but I’m so ready for a kid (or anyone) to ask me this so I can do a better job. Ideally somewhere I can get hold of coins because who carries those any more?
…and that, son, is why at some point in the distant future the universe will be an undifferentiated soup of unvarying temperature, full of depleted and inert mass slowly evaporating into photons. In the end, everything you’ve ever been, ever done, and ever seen will be nothing more than a diffuse haze of light, racing unobserved and unobservable through a dead and infinite void. Any questions?
One of my nephews asks about these sorts of things all the time. It’s a delight that he’s frequently interested in the answer. Usually I have to abstract it by a bit, but he’s smart and will often bring up my answers later.
1st law of thermodynamics: best you can do is 100% efficiency.
2nd law of thermodynamics: haha jk
This is me every day with my two year old who asks why all day long.
This is really close to what I do for a living.
