Potential mapping of dvar model onto the traditional insight stages.
Arising & Passing = high tda, high dvar = creativity, bliss, confidence, clarity
Dissolution = low tda, low dvar = melting away, loss of energy, loss of drive, loss of clarity
Dark Night = low tda, high dvar = strong repulsion, fear, disgust, eventually a desire for deliverance
Equanimity = increased tda, low dvar = wellveing, calm
Nibbana = strong deire for deliverance from a seriously shitty dark night, and *hard work* to achieve it through meditation (and Z2?)
in short: a dark night is your opportunity for nibbana. The night is darkest before the dawn and all that.