Lupo, calling Da'ath the power of Knowledge is most certainly an excellent way to look at it, especially if you enscribe Wisdom and Understanding to Chokmah and Binah.
~(Heretical and potentially outraging comments forthcoming. Treat my comments as play with an analogy and not any belief on my part of this being a literal as opposed to mythical truth. They aren't offered as objective truth, only my opinions and personal insights.)~
Of course, it was from eating the fruit of Knowledge that Man and Woman had their eyes opened... and lost their personalized relationship as sheep of God the Shepherd. My personal belief is that what damned them wasn't eating the fruit- it was running away fearfully from the True Gifts that Knowledge gave them. If they'd not let fear master them, they would have immediately reached for the fruit of the Tree of Life and become, as nachash the serpent told them, as God itself.
Instead, they remained in a subjected to its Will and Wrath through supersticion and an unwillingness to allow Knowledge to lead them beyond this Da'ath to the Understanding and Wisdom and Divinity beyond. They fell straight to Malkuth and toiled there, disconnected from the upper eight or nine sephiroth and upper two or three worlds.
As individual children, we always have our work cut out for us making our way back up, and Da'ath remains the "make or break" crossroads that we must move fearlessly and shamelessly through-- and very few humans even humans who are mystics, magicians, or shamans, ever achieve the necessary inner harmony and self-understanding to move through Da'ath successfully.
In Empire Strikes Back, when Luke Skywalker was faced with his own personalized Tree of Knowledge of Good and Evil, he reacted out of fear and while he obtained some Knowledge, he didn't complete the journey to become a Yoda-like being because he was too young and unready for the task at hand. Magicians make the same damn mistake- Crowley did, imo. We think we're ready for Da'ath when we're not, because of hubris or some need for achievement or glory or hunger for power. The Abyss is bigger than us, however.
Laurel