The API we use in programming languages are not adequate for describing the order in which we can perform the API calls. They are basically useless. - Joe Armstrong

If you have know idea where the leak is coming from, you'll want call a professional plumber who will have the equipment to locate the pipes in your walls [...] So, he's talking about software!

When I'm writing a program, my approach is to "write a bit" and then "test a bit." I start with a small module with few functions, and then I compile it and test it with a few commands in the shell. Once I'm happy with it, I write a few more functions, compile them, test them, and so on. (page 60)

I was using Smalltalk and I never actually go through this boundary of sort of simulating the class structure in my head so that I can program itself. It was painful, I used to chose the changelog to find things, I regret you did it.