wish to explain my reading of jhana’s as a method for getting nirvana.
jhana’s are a pause in suffering as the mental states such as grasping at a sense of self have been suppressed for the period of the jhana. This non conceptual period of meditation gives one a direct experience of the absence of a self (doer, knower) and suffering. When one emerges from the jhana one can use discursive (thoughts) meditation to analyse with a laser like level of concentration a direct counter example of samsaric states that one has just emerged from. This method provides the object of refutation and the ability to hold the understanding with this powerful level of concentration in order to realize sotapanna
To try and realize no self, dukkha or impermanence without a direct comparison of with and without samsara paused by suppressing samsara through being in a jhana and without a level of focus that can cut thru would only lead to a intellectual understanding. This reading of how to and why comes from reading Mindfulness bliss and beyond a meditators handbook by Ajahn Brahm.