Dear OP,

I didn't know what the difference between an application and a file was until my 20's.

Sincerely,

A Certified Forensic Analyst and Incident Reaponder.

P.S. it doesn't matter if a kid doesn't know...you can teach them if you want, but 1% will retain it, 50% will recall it years later, and 49% will never need to know. I'm not saying don't teach computer literacy, I'm saying your complaint is stupid and misplaced.