An easy example: you need 5 minutes of planned downtime (which is entirely within SLAs) to execute a major upgrade, but the system is also used by Sales for demos to major new clients. "We're going to take 5 minutes of downtime on Wednesday evening for an upgrade. Contact me ASAP if this is a problem for you." If you don't hear from the team, then it's OK to go.
You know the "no response" happens all the time.
OK. I'm your pointy haired boss Thursday morning.
> Hey, @waisbrot. You didn't mention anything in your note whether you got a response from the Sales team. I got a call from the VP Sales. He's pissed. You know they're at [big sales conference] and busy. The system outage impacted two Top 10 customer account demos. Why didn't you call me if you thought it was important or ask for an affirmative confirmation from the sales team before rolling out changes? Sorry, but I can't trust you. Bring all similar changes to me for approval from now on.
Of course there are routine things or items in your competency that allow for your boss to prioritize supervision elsewhere.
The prospect of going rogue, lighting a fuse, and then potentially setting off fireworks is the nuance being argued here by me and @slowcache.