April 2017
Beginner
160 pages
3h 7m
English

If you can’t explain it simply, you don’t understand it well enough.
—ALBERT EINSTEIN, PHYSICIST
Do you know how your toilet works? When you lift the lid off the tank and look inside, what are all the parts in there meant to do? Why does water sit in the bowl, rather than just drain away? There’s a lot of stuff people don’t understand about toilets, even though most of us use one every day. The same is true for many other things all around us: the gearbox in your car, the speaker in your phone, or how your onions get caramelized on the grill.
There are so many systems and processes in the world that you can’t ...
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