Comment by jasomill

I'd hardly consider it secret, or wisdom, but I can think of many problems involving ZIP files I've solved in the past that it wouldn't even have occured to me to pose if I hadn't understood the broad structure of ZIP files as a series of metadata/data pairs followed by an index containing a mostly redundant copy of the metadata.

In other words, solving the right problems, however inefficiently, will always be more useful than solving the wrong problems efficiently.