1. Write documentation while things are compiling. 2. Finish other work. 3. If you iterate a lot, maybe just reading the code figuring out your next steps. 4

1. Write documentation while things are compiling. 2. Finish other work. 3. If you iterate a lot, maybe just reading the code figuring out your next steps. 4. Maybe figure out why it's taking so long, and figure out a way to speed things up. 5. Write more tests.