> Because I tend to write all my code such that a complete stranger should be able to drop in and understand it This isn't an achievable goal for most complex

> Because I tend to write all my code such that a complete stranger should be able to drop in and understand it This isn't an achievable goal for most complex systems. Even very well written and documented code bases (for e.g. tcmalloc, bigtable) require a good deal of background reading to develop a baseline understanding of what is going on.