Do the "Cannot store a list of numbers in a list" and "Cannot store a list of points in a list" errors imply there's a case where you can have a list within a list?

Questions
1

Am I wrong in assuming the “Cannot store a list of numbers in a list” and “Cannot store a list of points in a list” errors imply there is a case where you can store a list in a list? The wording seems to suggest so, but I can’t seem to find anything confirming/specifying what this case would be. I can’t think of any reason it wouldn’t be worded as “Cannot store a list in a list” in both cases if there wasn’t an exception though, so I’m genuinely curious

2

No. It’s literally saying there is no situation when you can do so.