[IronpumpedLady]

Here's another example of the kind of thing I'm talking about:
Achaan Dhammadaro on Jhana:
When access and absorption concentration are developed, bliss and tranquillity arise, the meditator is fully absorbed in the object, and no hindrances can disturb him. This provisional eradication of defilements a state free from desire, aversion and confusion lasts only so long as the meditator keeps the mind on the meditation object. As soon as the mind leaves its absorption in the object, bliss disappears and the mind is again beset by the flow of defilements. There is additionally a danger of this fixed concentration. Since it does not generate wisdom it can lead to clinging to bliss or even misuse of the powers of concentration, thereby actually increasing defilements. http://www.angelfire.com/indie/anna_...vip-jhana.html

Again - Jhana isn't some kind of zombie "fixed concentration". It's a dynamic process suffused with awareness.

I can't dig up what I've read over the years but the gist is always the same. After referring to commentaries in the Visuddhimagga and describing Jhana in such terms, they generally conclude that it's not a useful thing to do and that you don't need it.