[Jtsummers]

Imagine this scenario, you're teaching CS 1 at your college. Your system for submitting assignments is to have students use a git repo and push it to a remote repository on your servers. You could tell them, "Just clone this remote repository when you start working on the assignment." But that's unhelpful, and the word "just" implies that they should already know how to do it. If that's your statement on day 1, you're hurting many of your students. Instead it should be something like, "We use Git for assignment submissions, it is a version control system. Here's where you can learn more about it. Assignment 1 is posted on the website and will walk you through using git to submit the assignment. The full procedure is also available here along with some cheat sheets. Here's our CS 1 material of the day." The assumption that students or new employees know the idiosyncratic processes and tools of your school, class or organization does what assumptions are prone to do, someone is going to come out looking like an ass. It may be the new person when they get frustrated, or the experienced person when it turns out "easy" is really 20 different steps on 3 or 4 different systems.