This weekend a teacher pointed me to Sutra 1.43 - which introduces Nivitarka Samapatti. This type of absorption exists without conceptualization. What this means is that the mind no longer registers sense objects, but instead focuses on the main object of meditation, the self.
It is hard to imagine life without registering sense objects. It seems impossible, like seeing without seeing or tasting without taste.
This sutra basically draws the line in the sand - everything else is just a clinging to ignorance. Absorbing yourself in tastes and sounds and sights is just a trick, pulling the mind away from the true object of meditation.
But what is life like without these tastes and feelings and smells and sights? Can it still be called life? Is that living?
Time is a sense object - so the yogi will not even know they have reached that state until they have come out of it. It almost sounds like a dreamless sleep.
It sounds peaceful, but without the feeling of peace.