The phhsical copy served an important purpose: it forces you to admit you will never do something and so give up on is. until I die it is safe to assume I will eat 3 meals per day. (It won't be 100% because of sickness but close enough) thus if I'm out of some food I will need a todo list to replace it. However if I never finish the ukuele I've started it won't matter and it is reasonable for me to give up on it.