There are also abstractions that are so good they are invisible until someone tries to reinvent the wheel without them. They are then forced to confront some re

There are also abstractions that are so good they are invisible until someone tries to reinvent the wheel without them. They are then forced to confront some reality which is more complex than they thought. What seems to be the common thread is: "you are not as good as you think you are". Never enough humility.