Distinguishing variables from parameters

🫧 Open on Bubbles Imagine the following dialog. Professor : f is a function of a real variable x that takes a real parameter k . Student : What’s a parameter? Professor : It’s a constant that can vary. Student : Then if it can vary, isn’t it a variable? Professor : Sorta, but no not really. This conversation plays out over and over, and unfortunately it often ends as it does above, with the student confused. Here’s how I believe the conversation should continue. Professor : You’re absolutely right that f is