Does knowing good AND evil give you knowledge of everything?

Fascinating thoughts from Simcha:

Knowledge of good and evil ...well, isn't that what God wants us to have? So we can be well-rounded, mature people with insight and empathy. [...]

Here's what occurs to me. It seems like if you had the knowledge of good and evil, you'd know everything.

But evil isn't something -- it's just a lack (yes, I'm the one who gave Augustine that idea).

So a knowledge of evil wouldn't add anything to you...If you have a knowledge of good, you already have a knowledge of everything. All you would have gained by a knowledge of evil would be a loss. Nothing new, just less of what is.

Read the rest here, and the follow-up here.