There's a scene in Netflix's The Queen's Gambit where two skilled Chess players are driving to New York. During the monotonous drive, they decide to play Chess. But they do so entirely verbally, no board involved as they are skilled and are able to hold the boards state within their heads.

The best way to explain how I debug is through this metaphor. I don't need the debugger to know what's happening. I know exactly what's happening with my code. The only reason I use print statements is to know what's being returned to me through other people's black boxes. I don't want to be limited to one black box query per run, so I can add multiple statements exactly where I think the black box is being weird.