Allow me my opinion:-
To attain a jhanic state in Buddhism simply means in a
concentrated state of mind which leads to " which lead to "state of
perfect equanimity and awareness (upekkhii-sati-piirisuddhl)."
https://en.m.wikipedia.org/wiki/Dhyāna_in_Buddhism
Ones must also be free of the five hindrances " namely:-
1.Sensory desire (kāmacchanda): the particular type of wanting
that seeks for happiness through the five senses of sight, sound,
smell, taste and physical feeling.
2.Ill-will (vyāpāda; also spelled byāpāda): all kinds of thought
related to wanting to reject, feelings of hostility, resentment,
hatred and bitterness.
3.Sloth-torpor (thīna-middha): heaviness of body and dullness of
mind which drag one down into disabling inertia and thick
depression.
4.Restlessness-worry (uddhacca-kukkucca): the inability to calm
the mind.
5.Doubt (vicikicchā): lack of conviction or trust.
https://en.m.wikipedia.org/wiki/Five_hindrances
Most of the time we assume jhanas are attained within the
context of sitting meditation in solitary cultivation. There also a
tendency to separate shamantha(concentration) and
vipasanna(awareness or insight) training as if they are two
different things.
They are simply two aspects attainable by our mind, with one
common denominator, focus. Difference is the degree of focus of our
consciousness. Focus of mindfulness deepens also means
concentration deepens.
Difference lies in the situations in which we apply our
focus.
We engage our sense consciousness, in the instance the of this
article, we refer sense of taste, not solely true as when we eat,
eg. put in the morsel in our mouth, as the bottom process will
show.
Before eating we see the food first before we pick it up(with
fork, for example). We engage our eye consciousness.
Then put it through our lips into our mouths and chew, sense
that touch is engaged. We sense the texture within our mouths.
As the the aroma is released as we chew, sense taste and smell
come to us.
Back to the article:-
Very often we crave the emotional and mental craving of our
experiences and tend to relate to gross or stronger and coarser
sensations. We have expectations in our cravings of our sense,
including and especially our mind consciousness.
That's why we swing between attraction and aversion, we are not
happy nor content.
What this article is telling us fundamentally about the Four
Noble Truths, our unsatisfactory state of being.
It encourages us by being mindful of our mind, ever
vigilant.
Please share yours, thank you!