or maybe they just didn't write the code? i mean, if it's mature it likely was a result of years of effort and many hands involved. some documentation is always

or maybe they just didn't write the code? i mean, if it's mature it likely was a result of years of effort and many hands involved. some documentation is always better than none, lack of documentation is either laziness or dogma; neither of which is a valuable mindset when working on a team for a business.