A user is a specific person (in this case, the developer), who is not an accurate proxy for a broader classification of people (in this case, people whose techn

A user is a specific person (in this case, the developer), who is not an accurate proxy for a broader classification of people (in this case, people whose technical acumen is similar to the developer's). And as to pipes, they're useful in the way LEGO blocks are useful: you can make pretty much anything you want from them. But sometimes it's just more fun to have a toy you can play with immediately, no construction required.