Comment by KPGv2

> "Focus on debugging your application rather than debugging your programming language knowledge"

This sounds like it's made by someone who fears discovering they don't know something more than discovering they made a mistake.

I am the reverse: I would prefer to debug my programming language knowledge over debugging my application. I hate debugging applications specifically because making a mistake is SO much worse to me than discovering there is a fact I didn't know yet.

And, of course, debugging your application is discovering there are unknown unknowns in deployment, the worst of the quadrant of knowns and unknowns.