Knowledge is the source of Wealth. Applied to tasks we already know, it becomes Productivity. Applied to tasks that are new, it becomes Innovation.
Creating a piece of software is always complicated because you're doing something new. If you just wanted something that had been done before you'd just use that old piece of software. So there are no repetitive tasks.
Even the mundane task may have something to teach you - especially if it's a task you haven't performed before.
I never hanker after the past - I prefer to devote myself to new tasks.
But by far the greatest obstacle to the progress of science and to the undertaking of new tasks and provinces therein is found in this-that men despair and think things impossible.
Every day there is something new you are working on. It is a challenge every day and that is what makes this game so great.
After you have finished a piece of work, the work is then none of your business. Go on and do something else.
One simply runs out of energy as you get old. One doesn't take on new tasks of exploration because it takes an extended period of intense thinking and working on it, and that becomes impractical.
