When you’re cooking breakfast and the school bus is coming in just a few minutes, it’s tempting (and apparently efficient) to yell up the stairs. If a recalcitrant teenager is hesitating before heading off to school (I know, sometimes it happens), go ahead and yell.
Good luck with that.
The alternative is to turn off the stove and walk up the stairs. Catch your breath, then have a quiet conversation.
Not efficient, but effective.
This is an almost universal metaphor. We keep finding ways to rationalize various versions of yelling upstairs instead of doing the difficult work of engaging instead.