Brother, the foremost thing we have to understand here is that the mind is our tool to explore the various directions in a similiar fashion as we have begun exploring deep space. But what is similiar here is darkness, for when in darkness we are moving we are not aware of the direction, but we are aware that we are moving and have covered certain distance, in the very same way all that we have done and are doing in this life are the small movements in the vast deep space of our brains, for all that you see on the earth right now sometimes before were first conceived in brain and some were invented in accidence, something similiar to dark matter,it is there but we are unable to comprehend it right now,maybe future generations will. Thus, meditation for long hours shuts the outside world for you , taking you deeper into deep space, exploring for that which is not common to see, searching for rarity, rarity that makes life possible in the arid universe, for some minds get poised into not thinking nothingness, that doesn't mean they aren't creating anything, they are forming innumerable nervous synapses, which are giving them privileged access to some of the premium stuffs that we cannot see and understand, it is only for them to cherish, and even if they want to share, they cannot, for the body becomes a very small medium for that, and so they sit scourging more premium services in their deep meditative state, for their minds have now tasted something better which they don't want to barter \exchange anything for or substitute with. Iin a similiar way prior to burger days, and generation brought up with burgers and softdrinks just can't let go their hamburgers, it seems to be essential, seems righteous , mouth watering delicious. These monks have just got their tongues ticked in silence tasting conciousness every moment, even word moment would seem unfit to describe as there's no moment thereon, time ceases to exist.That state is beyond understanding because for it is so great to understand , we are just a speck, a bubble, an ant and a dust in this vast multitude, but it is acheivable, it has been proven by human lives world over, but for that commands sacrifice, sacrifice of world for truth. You see laws of nature are consistent, you gain some , you lose some.
Hope it helped,and if it didn't , trust me , it definitely did :)