QUOTE (CaptRory @ Jul 7 2014, 09:46 AM)
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His stance was that since it applies no mechanical penalties to social skills, charisma, etc. that there was no penalty for having next to no Essence. You're basically the same person just with more hardware. (Yes there are penalties to things but in the context of this discussion they don't count.)
Short answer: Your GM is right.
The lack of rules for this situation means that RAW, you can go down to 0,1 and never have any issues relating to nice things like puppies, ice cream or cotton candy.
This being said: There
are rules, if you want them. You can pick up cyberpsychosis in a variety of flavours (in the form of fun mental and health issues) from the Augmentation book and / or use the cyberpsychosis optional rule there. Even then, it's pretty tame as a negative quality, and something you can easily avoid. The rules are on p. 21, Augmentation, if you're interested.
You can also be a good roleplayer and just
say that your character relates less and less to his fellow humans, the more meat he sheds. There are bound to be effects if you're able to kill someone with a flick of the wrist, before they can even react. You'll probably feel superior, self-assured, and maybe even a bit more inclined to use violence to solve problems. After all, when you're a hammer (not Captain Hammer, this would be inappropriate
![wink.gif](http://forums.dumpshock.com/style_emoticons/default/wink.gif)
), every issue looks like nails. There doesn't need to be a roll for this kind of behaviour. You can just say that this is how you play your character.
On the other hand, you're also completely free to just state that your character received counseling to cope with his loss of essence, and suffers no adverse effects at all.
Now to your original question "What is essence, exactly": There is no exactly, although none of the previous posters are wrong (even though I'd debate the soul bit, not being someone who believes in this kind of thing).
Different editions have handled it differently, but here's my explanation:
Essence is not the soul. Essence is not just a mechanic. Essence is, in essence, Essence. There's a reason why there is no other word for it, because Essence is its own distinct thing. It is a measure of a thing that interacts with your body and the manasphere. If you lose too much of it, your body's connection to the manasphere breaks and you die. That's as specific as my explanation gets, because in my eyes it's not a graspable thing, just something where the limits are clear (although they can, in the case of cyber zombies, still be broken). That's also why it gets harder and harder to heal a body magically the lower its Essence score is.
Furthermore, in my opinion, Essence does not have anything to do with how you interact with the world around you or skews your perception of it, that's what particular implants are responsible for: A cyberlogician will tend to calculate odds and make decisions based on this and may come across as aloof, or outright terrifyingly ruthless; a gillette or razorboy will threaten with spikes of built-in chrome, because they know they're a weapon and can cut anyone they disagree with. Active boosters make people twitchy, because they are constantly on adrenaline, and so on.