You start by placing the burden of proof on me, which is accurate. However, in my initial message I laid out why deontology is false, and you don't seem willing to engage with the core arguments.
You say, "Void lacks killing. "Nothing" lacks killing. Person can likewise lack killing. thus, lack of killing is possible, and thus not logically self-contradicting."
Sure, it's obviously possible to not kill people. Whether it's necessarily not logically self-contradictory (in terms of decision-making) is stipulated.
Next, you say, "Because "lack of killing" is not a presence of anything, it logically doesnt exist, as it is a negation of certain existence (existence of killing)."
If you abstract enough this is true.
Next, you say, "By law of identity, what doesnt exist also maintains its non-existence in category of "needs a reason"."
I can see where you're going with this. It doesn't work because the decision to not kill is real, it's not nothing. And, also, deontology isn't just doing what's not prohibited.
Next, you say, "thus, if "lack of killing" doesnt exist because its not "something" or presence of anything, its non-existence likewise is maintained in category of "needs a reason"."
You're successfully abstracted from deontology here. The decisions that exist in the context of duties are always something. That includes the decisions to not do certain things.
Next, you say, "In simple terms, it is impossible to place non-existence in any category other than "non-existence", as something which doesnt exist likewise cannot exist in any category which only includes things which exist."
A fine conclusion!
Next, you say, "It is likewise illogical to say that "non-existence" requires a reason to exist, as it doesnt exist, and thus doesnt require a reason to exist."
Might it require a reason to not exist?
Next, you say, "Non-existence is the absence of something. It doesnt require anything to be added to it. "Non-existence" only stops when "existence" is added."
Why doesn't it "require" anything to be added to it?
Next, you say, "By definition, non-existence is a lack of something. As such, the only thing it requires is "not adding something" (Lack of cause for existence)."
"Not adding something", if interpreted as an action, is itself something.
Next, you say, "However, killing is by definition presence of something. thus, it needs "killing" to be added by some cause."
I'll say that we can agree it would be justified according to duties assuming deontology is true.
Next, you say, ""nothing" merely requires not adding anything to it. So the only reason for "nothing" is a lack of reason for "something", thus it is "something" which needs a reason to justify it."
A lack of reason for something isn't equivalent to a reason for its opposite.
Then, you argue, ""It is okay to kill sometimes"
this is not any logical law. It doesnt need to exist everywhere, and as such, it only exists when there is a reason to make it exist."
So, if you admit that there can be reasons to make it exist, then why does it need to be universal? Does it?
Then, you argue, "the reasons can only be: arbitrary, or material causation chain. However, none of these justify a "should" statement."
What makes those two descriptions exhaustive of all possible reasons? And even then, what makes them unable to justify a normative claim?
Then, you argue, "Material causation chain, such as a rock falling onto person's head, and killing a person, does not say "this should happen", because "should" statement deals with morality of an action which should happen, not action which did happen."
Why do you separate what should happen and what has? Also, material causation chains will go into the future, so this argument doesn't work in the first place. So, the statement in that case could remain accurate if it was "this should not have happened".
Then, you argue, "Arbitrary reasons likewise arent reasons which are logically deduced, and as such, they are not true reasons."
You can, to some extent, produce an arbitrary justification through logic. But, if the reasons themselves are arbitrary then, sure, they're not true.
Next, you argue, "My opponent must prove that "lack of killing" rule is false. He can only do so by using deductive logic to show that presence of killing is at least sometimes good. However, he never once used deductive logic in this whole debate."
Why must I only use "deductive" logic? And, no, I do not need to show that killing or anything in particular is sometimes good. I only need to disprove any deontological rule such as "do not kill", and I feel I've already done so. That rule has no basis in ethics because every possible justification for it logically contradicts itself.
Then, you argue, "Opponent already conceded that observations cannot derive "should" statements, thus the only thing thats left is deductive logic which he so far didnt use."
Observations can derive very little by themselves, if anything. Observation must be interpreted to derive anything. I'm not sure why you're obsessed with "deductive" logic. Not all logic is deductive. You can just say logic.
Next, you say, "Likewise, the only way for my opponent to prove that "lack of killing" is unjustified, would be to first prove that a lack of something needs a justification at all, and then that "killing" is sometimes justified."
You're conflating several things here. Firstly, and once again, "lack of killing" as an action is still always something, which would need justification in deontology. As for the duty that "we ought not kill", that's not just a lack of justification of its opposite, that's the positive justification for it. So, no, I do not need to show that killing is ever justified, only that deontology's justification is itself self-contradictory.
Next, you say, "Without these conditions, it is not possible to prove that rule "lack of killing" is unjustified, and with that, not possible to prove that deontology (unchanging rules morality) is unjustified or false."
As I've shown, this isn't true.
Then, you say, "Because killing lacks in most of universe, it could be said that much more universe lacks killing than has a presence of killing."
I suppose you could indeed say that.
Then, you say, "So my opponent must simply prove why presence of killing is something which should sometimes exist."
As I've shown, this isn't true. You're repeating the same thing a lot.
Next, you say, "Saying that it sometimes exists is not same as saying "it should exist"."
True!
Then, you say, "And because it is possible to lack killing, no logical contradiction arises for lacking killing in any part of space which lacks it."
Well, nothing that actually exists or happens (or that doesn't) is actually logically contradictory in the first place besides conceptualization or reasoning.
Then, you say, "So lack of killing is possible, and it also doesnt need a reason to justify itself."
It could need justification if it's an action, which is what deontology is about.
Then, you argue, "Until my opponent presents a case for why "killing is sometimes justified" using logical deduction, no case against deontology is even made."
A brilliant stipulation, because the implication is that deontology can only be false if it is true.
Then, you argue the following: "the only reason which lack of something needs is lack of adding of that something. Or in deductive logic form:
P1. Lack of something means that something is not added
P2. Something not added is a lack of adding
P3. Lack of adding is not a presence of anything
C. Lack of something doesnt require presence of anything"
For P1, it could also be destroyed.
For P2, that's flawless. Did you come up with that one yourself?
For P3, once again, if we are discussing actions, then you'd still have to be doing something else.
For C, I suppose if you abstract enough this can be true. But in the context of real actions, this would fall apart.
Then, you argue, "thus, lack of killing does not require presence of anything. And in "should" morality, it likewise doesnt require presence of any "should" reason.
P1. Lack of killing is not a presence of anything
P2. Lack of presence of anything doesnt require "should" justification for anything
C. Lack of killing doesnt require "should" justification for anything"
For P1, it could be.
For P2, this isn't true. For instance, Kant argued that someone ought to never lie. That would be a "lack of presence of lying". Yet, it would be justified. This just shows that you can't interpret actions and non-actions the same way in the context of duty. You also seem to be conflating a duty to not kill and a lack of a duty to kill.
For C, as I've shown, it would.
Then, you argue, "to further expose the flaw in opponent's case:
P1. "Killing should be done sometimes" is a "should" statement
P2. "Should" statements require a justification to be accepted
P3. With lack of such justification, statement is not accepted.
P4. "Killing should be done sometimes" lacks a justification to be accepted.
C. "Killing should be done sometimes" is not accepted"
For P1, you're right. That phrase does indeed use that word. I have no choice but to accept that one.
For P2, not really. They require a justification to be true. But, people can accept them without properly understanding why it is or isn't justified.
For P3, it could be. But, if you just mean it can't be true, then sure.
For P4, why?
Due to it's reliance one the undemonstrated P4, C is mere assertion.
Then, you say, "thus, one merely needs to not accept "Killing should be done sometimes" in order to follow "Lack of killing" rule."
That's not true. For instance, if you accepted that "killing should always be done", then you may follow neither. You haven't properly justified any rule or any lack of rule. And, also, you could believe that killing should sometimes happen without killing anyone yourself. This wouldn't be arbitrary if it simply context dependent.
Then, you say, "Person who doesnt accept any "should" statement would likewise not accept "killing should be done sometimes" should statement."
Now we're getting somewhere. Fantastic.
Then, you say, "And once no "should" statement is accepted, the only thing thats left is lack of any "should" statements."
Yeah, that's the following conclusion. So, this would include rejecting a duty to not kill. You're on track.
Then, you say, "Lack of "should" statements translates into being impossible to justify "should kill" statement, while "It is not true that killing should sometimes be done" becomes true in a void."
Correct.
Then, you say, "So merely not accepting a "should" statement by logic means "should" statement isnt considered true there, and thus its negation becomes true."
Woah woah woah. What do you mean by it's negation? "People should sometimes kill people", if all normativity is false, does mean that, as you said before, "It is not true that killing should sometimes be done", but if you are trying to say that, therefore, "we should not kill", then you are contradicting yourself because that would not remain true either.
Then, you say, "Because lack of "should kill" is a negation of "should kill", it is true any time when "should kill" is not true."
And 1=1.
Then, you say, "And because void naturally lacks anything, thus lacks "should kill", there needs to be something which adds "should kill" in order for "should kill" to be there at all."
I guess so!
Then, you say, ""Misrepresenting deontology"
Deontology is a wide area of morality, and my opponent has said they would let me present my version of it. Because deontology is by definition "unchanging rules which dont depend on consequences of action", one such rule is "Lack of killing", or lack of "should kill"."
I never said you were misrepresenting deontology, but I would say that you do misunderstand it for two reasons. You initially defined deontology "according to Kant", and clearly, what you've argued isn't aligned with his beliefs. More importantly, what you're trying to argue is completely untenable for several reasons, and even other deontologists have realized why, including Kant. But, you're perfectly allowed to defend whatever position you choose. Also, that's not the only definition of deontology, but it's likely sufficient due to the implications.
Then, you argue, "Because logically, there are only two options:
A. Killing should sometimes be done
B. It is not true that killing should sometimes be done
As long as A isnt proved true, it cannot be placed in category of "true", and thus B becomes true by default.
For this reason, opponent needs to prove A, or else his case against deontology is non-existent."
A and B are far from exhaustive. For instance:
C. Killing should always be done
D. Is it not true that killing should always be done
E. Killing should never be done
F. It is not true that killing should never be done
G. Killing should be done once
H. It is not true that killing should be done once
Though, not all of them contradict. You say that if A isn't proven to be true, then B has to be true. However, it could be true independent of proof, and much more importantly, neither B, D, F, nor H are deontological duties, they are descriptions of a specific lack of duty.
Then, you argue, "Or to be more precise:
A. It is considered true that killing should sometimes be done
B. It is not considered true that killing should sometimes be done
In order for something to be considered true, it needs a justification or anything can be considered true.
Without a justification for "killing should sometimes be done", it cannot be logically considered true, and as result, B becomes true.
If my opponent cannot provide justification for A, then B is logically accepted, and with it, deontology rule of "lack of killing"."
Not everything that is true has been justified. So, it doesn't follow that just because A is not unjustified, it would therefore not be logically considered true, and that therefore B is true. That's because A could be true independently of whether it is logically considered true. However, I do not intend to show that A is true in the first place. B is not a deontological rule of a lack of killing, it is the lack of a duty to sometimes kill.
Then, you claim, "this wasnt deductive reasoning. Claiming arbitrary reasons as "explaining why" is not any form of deductive reasoning.
Deductive reasoning comes in form of:
A = B
B = C
A = C
Because you already conceded that you cannot derive should statements from observation, the only thing thats left is deductive reasoning with first premise being a logical law itself.
And because deontology unchaning rule is "lack of killing", you still must logically explain why killing is sometimes justified, to prove that rule false."
You said this in response to when I said, "Actually, there was. You claimed that I had to justify killings when that's not true, and I explained why, logically."
And, I said that in response to when you said, "No logical deduction made here."
And, you said that in response to when I said, "This is not quite true. To prove it is false, I would need to show that intelligible instances of killings could be justified in at least one case, or, that killings would be irrelevant in at least one case. In my previous message I aimed to show not that killing is sometimes justified, but that the universal justification for not killing, or the universal condemnation for killing, is itself baseless. So, you have failed to justify that this duty actually applies in reality in the context of my argument on value and ought."
And, I said that in response to when you said, "In simple terms, statement such as "killing should not be done" is always true. It doesnt become true or false by any consequences, but is always true.
In order to show that this statement is false, my opponent must logically deduce that killing should be done at least in some cases."
Firstly, logic can still involve observation. It essentially always does on some level. So, my "concession" was that observation by itself cannot establish anything logically. As for my logical reasoning, it was about discovering your conflation of "it is not true that killing should be done" with "killing should not be done". How did I discover this?
To use the letter you seem to love, here is how:
A = Duty to not kill
B = Lack of duty to kill
C = Duty or justification to sometimes kill
A and C are mutually exclusive
and B and C are too
If C is false, then B is true, and A could be true
Yet, you suggested that
If C = False
Then A = True
But, this is asserted because both A is not necessitated, only possible
You made this assertion because you conflated A and B
You thought A = B, or you didn't realize B was possible.
Then, you argue, "If you are relying on arbitrary preference, then that is not a logical decision."
Logical premises or conclusions that happen to include preferences remain logical.
Next, you say, "the argument was about "killing" contradicting itself as an option, as no logical decision is possible to be made about who gets killed."
You said this in response to when I said, "That is correct, which is why killing contradicts it as a potential option."
And, I said that in response to when you said, "this argument was about not killing."
You said this in response to when I said, "For P2, killing is a contradictory option."
And, finally, this was in response to when you said, "P1. In order to make a logical decision, there must not be multiple logically valued same but contradicting options within same decision
P2. "Killing should not be done" produces no contradicting options
C. "Killing should not be done" is a logical decision which can be made"
So, I've already addressed this reasoning before. Earlier, you said that not killing produces no contradictory options like how killing does because you would have to choose who to kill. But, not killing is the exact same. In other words, there are contradictory options because you may have to choose who not to kill. But, of course, if you're not killing anyone, then I suppose that you wouldn't have to choose anyone in particular. However, you would still be doing something instead of killing, and among that something, there are certainly contradictory options. What I didn't note before is that something like "kill everyone" doesn't produce the exact contradiction you described.
Then, you say, "Decision on "who gets killed" is an entirely a problem of "it is sometimes okay to kill" position, not a problem of "it is never okay to kill" position."
Sure, that's true, but you're still making a decision that no one should be killed, which you have thus far stipulated. If you think about this in a more prior way, then there are already contradictory options in that "killing sometimes" and "never kill" contradict.
Next, you argue, "Deontology can include negative duties only. there is no reason why it couldnt. One does not need to follow everything Kant thinks to defend Deontology."
Sure, I'll allow this, but then you should realize that you're prescribing absolutely nothing. You are trying to say that everyone should do absolutely nothing, which is impossible. However, you failed to justify even that, because a lack of justification does not imply a justification to universally not. It straightforwardly implies nihilism.
Then, you argue, "Yes, if you are stealing things, you must logically justify that action. But you still dont need to justify "lack of killing", for you are not doing killing. So even if person does other things, lack of killing does not become unjustified."
Even if you don't have to justify it, it doesn't mean it is automatically justified to do it.
Next, you argue, "this is only if I defend positive duties deontology, which I dont need to. For dentology to be false, a version of deontology with only negative duties would have to be false too."
Correct.
Next, you say, "this would be an action, not a lack of."
As far as I'm aware, most don't call natural events actions. But, if you want to include everything in existence what must adhere, that's fine, but I believe you may come to regret this.
Next, you say, "My position here defends a lack of action, and not due to consequentialism (consequences of action), but rather due to action itself being impossible to justify logically before it is even made."
It does not defend a lack of action, it actually attempts to attack all action. (Not successfully, I will add)
Then, you say, "No, the conclusion is that if you are doing something illogically, you cannot at same time do same thing logically.
Maybe some other time you can do it logically, or maybe someone else can. But due to law of non-contradiction, something cannot be both logical and not logical at same time in same place."
You didn't mention at the same time before. In this case, your argument is trivially true but also irrelevant.
Then, you say, "No, saying that something isnt correct isnt same as showing it is not correct. You are yet to use deductive logic to show that lack of action requires a justification."
Well, maybe you should respond to what I said to your P1 the first time you used it instead of attacking my response to your repetition of it in which I was just saying I already responded to it.
Then, you say, "Lack of action is not a "thing". It is the absence of thing, and it is justified by mere lack of reason which adds that thing."
Once again, a lack of action here is really just not doing something, which also means you're doing something else.
Then, you say, ""Lack of killing" is not a thing, so it cannot cause anything. thus, no causation chain possible. Causation chain only exists in things which exist, not in things which dont."
I wouldn't be so hasty. A difference in reality can result from not killing. In a way, nothing can have causal influence, but only as opposed to the actuality of that thing.
Then, you say, "No, a void does not believe in God or anything, and holds no position."
A void also doesn't believe in anything. Does this mean no belief is a position?
Then, you suggest, "Likewise, burden of proof isnt on me to prove that "killing is sometimes okay" is false."
It's not on me to prove that's false either. Nor is it on me to prove that it's true.
Then, you say, "When there is no justification for killing, "not killing" becomes the default stance, or to be more precise, lack of belief in "should kill"."
Not killing wouldn't be the default stance. Both killing and not killing could be equally as justified (lacking total justification or justification to not), even if there isn't justification for killing.
Then, you say, "In order for something to be justified with deductive logic, it needs deductive premises. And first premise needs to be either logical law or observation. Because "it is justified to kill" is not any logical law, and it likewise isnt observed everywhere, no justification for it exists."
Then, I sure am glad I never made that claim!
Finally, you argue, "In order for something to be justified with deductive logic, it needs deductive premises. And first premise needs to be either logical law or observation. Because "it is justified to kill" is not any logical law, and it likewise isnt observed everywhere, no justification for it exists."
I never such such justification exists. In fact, I've been arguing against deontological justification.