I believe the "knowledge of good and evil" is just a way of speaking of the birth of the conscious mind. Prior to this time the ET workers just had access to the Reptilian brain and/or the subconscious mind. They lived in a state much like animals and they didn't have an awareness of anything else and all their needs were provided for them just as we provide for our animal pets. Without a conscious mind they couldn't make judgements or comparisons.They also didn't have desires for anything "better" but they could be programmed to do simple tasks. This seemed like Eden. The Sirians made alterations to their genetic structure That allowed them to grow a mammalian brain which would allow for conscious thought to occur. They now had become "as one of us" to their Reptilian Masters who they had viewed as God or gods. They now could make choices and would be able to evolve rapidly compared to the normal evolutionary cycle. There is some distortion in the Bible story that was deliberately done to make the Sirian ETs ( this as a large grouping of ETs that included the Sirians and other groups referred to as ENKI) to be presented as Satan. The real "bad guys" if you will were a large grouping of ETs who wanted to keep these creations dumbed down and used for slave labor.These are referred to as Enlil and were made up of the Orion Annunaki/Reptilain, Grey Ets. The taking of a rib to create Eve is a reference to genetic alteration or creation. Being able to know good from evil or to make conscious choices was a necessary step in our evolution but with it came being responsible for the result of those choices but this also is a way of speeding our evolution. In more recent times there has a been a strong push by the forces who are really in charge of the Illuminati ( the Enlil already mentioned) to try and dumb us down and try to put the horse back in the barn. This cannot be done but so much of the conflict occurring is the attempt to do this. The energies of these times which were foreseen by the Enki are causing an awakening of consciousness and the activating of higher brain centers that this consciousness works though while in a physical body. Those represented in the story as the Enil are terrified of this happening and are doing everything they can to stop it or slow it down. Yet, it cannot be stopped and all of those structures that were based on and held together by a lower levels of consciousness are collapsing because of this rise in consciousness. Well, I could go on but I know its not necessary. Its impossible while immersed in a physical body in the 3rd dimensional world of duality to not make judgements unless you can raise your consciousness to a higher level. Its just a school for training the mind/consciousness-neither good or evil.