Thinking outside the box

What box ?!

Why cant we think in thin air. Thinking outside of something implies another something. Nothing we think of can come from nothing though. Or can it? Does everything we create have a reference even if we don't consciously realize it? How can I create a world with no reference?
But more on this later.

For now, I will leave you with the puzzle that started the use of the expression.........



Starting from any point, draw four continuous lines (without lifting the pen) so that each of the nine dots has at least one line running through it.

hint: THINK OUTSIDE THE BOX

Click here for the answer.