> The worst feeling is "cleaning up" some code, discovering the edge case under which the "simple" case fails, then re-implementing the same solution. Whenever

> The worst feeling is "cleaning up" some code, discovering the edge case under which the "simple" case fails, then re-implementing the same solution. Whenever I encounter this I: 1. Add a comment explaining why the complexity is needed, because it will happen again. 2. Add it to my mental list of case examples of when I need to add a comment explaining something the first time I write it.