Dear Deito,
Certainly I'll give you a deep & a detailed answer for your question.I'm not going to blame anyone or any thought for the original sin.
I know that you are a devotee of Hari.Do you believe in the formless God or Hari Conscious?So many rishis & saints have experienced the formless God & have tried to explain it but in vain.
When asked about God, Gautham Buddha was silent as he could not explain soonya to people of his time.
My Guru Vethathiri Maharishi has explained space in a scientific manner.He said that space is Conscious & it has 3 other qualities 1. Force, 2.Totality & 3. Time.The Conscious or Space is not static as everybody think.My Guru has explained it as quivering which is the lowest form of vibration in the whole universe.
The force in the space is self compressive & so the space emerges as a whirling wave which is the fundamental energy particle & the building block of the universe.
The cause of the original sin is this force.If there isn't any force & the space is just the pure Conscious the universe wouldn't have come.If there is only the force & no Conscious[viveka] then the universe will not function in a regular pattern & precise way.
So now in the evolution process the force & the Conscious functions as when one is patent the other is latent & makes the universe function in a proper way.
All the negative qualities in animals as well as human beings are due to the cause of the force functioning in each cell.All the positive qualities are due to thecause of the Conscious[viveka]There is a saying that ,"when there is speed[force] there will not be the viveka".This speed or the force is the cause of all the sin.Anybody if he uses his viveka will not do any sin.
Nature is such that the whole universe functions because of the +ve & the -ve force.Can you blame anybody for the sin?If one uses his super conscious he will not do any crime, it is the negative gorce in him makes to do all the wrong doings.He does it when the force is patent in him.
Now coming to the Toatality, it is the Love which binds the whole universe & that's why we say God is love.An enlightened person has the force, conscious in him.He sees that only his viveka works in him.He never let the force dominate him.The totality or the wholeness is the love of an enlightened man where he is only love.He experiences this.
I hope Deito that you can understand each word of mine & clears your doubt.
Blessings,
Lalachi