Make everything simple, and nothing becomes hard.

Be curious, explore the pieces and see how they fit together. That way, you know how to replace something when needed. If a piece is missing, you know the shape of it. You can search for what is needed, but the best pieces, you often have to invent.

Things often need to change. If the things are simple, they are easier to change. Simple is flexible.

The users are everything, without them, there is no thing. It’s all about making useful things for them.