色即空：空即色。

the abstraction gives birth to the instance, and the instance is exactly like the abstraction. you cannot see the instance, but you can know it is alive. you can see the form of the abstraction, but it is not alive. so which has more form, the instance or the abstraction?

just like the runtime is the program, the source code is the program, the binary is the program, but the source code is not the binary, and the binary is not the runtime.

that's why computing to me is both philosophy and engineering.