[jaf12duke]

This system works for us, but may not work for others. Either way, I don't think it produces burnout. Empirically, this hasn't been the case. We're 2 years in and I've never had burnout been an issue. For a few reasons:

The people on our team like work to have an ebb and flow. There are times when we're pushing 100% and times we're reflecting. The 100 day horizon is actually quite long so there's time to refactor, vacation, and reflect.

We do our goal planning bottoms up. Almost every one of our goals has originated from the engineering team. 100 Day planning sessions are an opportunity for individuals to lobby for their project. It feels great to push your own project and it feels great to pitch in on someone else's.

We do unlimited vacations (which everyone says) but our team actually takes advantage. We don't have a culture of martyrdom, so people don't feel bad. I've found more people take time off in the beginning of 100 day segments than the end.