My take on one of the most amazing things ever!
The explanation for thinking outside the box that I like the best is this. We all have a box, an area, a sphere, whatever you want to call the set of tools you use when you seek to solve a problem. We keep going back to those tools because they worked for us in the past. Most times that's a good thing. Sometimes they fail. For some of us we keep going back to the same tools no matter how often they fail even though we end up with more problems as a result. This is what I understand as thinking inside the box.
Thinking outside the box is when we decide that those tools are not enough and we go seeking new solutions somewhere else. It can also be when we take something we learned or saw and apply it in a way we’ve never applied it before. You quoted Einstein. Did you know that Einstein is famous for a popular quote used in self-groups?
“The definition of insanity is doing the same thing over and over again expecting different results.”
If the tools at your disposal work, then you have little reason to think outside the box. If they won’t do, then it’s time to start thinking outside the box and look for new ways to do things or seek out people who know how to.