Ugh. He's complaining about commonly known physics abbreviations. Short variable names are fine as long as they are descriptive. The key thing to keep in mind i

Ugh. He's complaining about commonly known physics abbreviations. Short variable names are fine as long as they are descriptive. The key thing to keep in mind is descriptive to you may not be descriptive to someone else (or future you for that matter.) You can even scrape by with naming the full version in declaration. nothing worse than a cryptic name you cant figure out at first glance like in this instance.