Attention is when the mind that is split, the mind that has come far away from the home wants to return; when all these splinter elements of the mind want to get reunified and reunified at the center.
So, when you just want to know about something, it is not attention.
When you are really curious in your inquiry that is also not attention.
Attention is when you want to reach the utter depth and you will not stop at any point in between.
Attention is when you say that I have to reach the very Truth, which is at the foundation of anything.