Welcome to Gaia! ::

thats why i put "exist" in quotations seeing as i may just be someones dream in the end and merely a very deeply conceptual indivdual

For my money the fact that you are self aware enough to base anything off of what you do and doo not know is true is enough proof for existence.

Proving the existence of those other things around you is a different coloured horse, as these things are fairly subjective and change at different times, prespectives, altitudes and such. A chair is a chair even if it looks different than any angle, but a chair is always a chair unitll it's state changes.

Your perceptions of things could very easily be imagined, exaggerated, or controlled somehow.

The whole "I think therefore I am" thing (aside from not being exactly what Decartes said) only really proves that you are capable of thought. Although that is existing, it says nothing about existence in the physical world.

But you have to exist to be deceived. So even if everything you perceive is a deception, the fact that you can perceive it still shows that you exist.

Unless your point was that personal perceptions are perceptions nonetheless... In which case I agree, but they still can not really tell you anything about the outside world, or even if it exists.

Well i think it would be better to say that personal perception can only tell us about the world we are currentlly experiencing. Even if it is "Reality" or a "Hallucination". So the "World" that we see now and experience with our five senses is still real. Whether if be a fictional world created within our own mind or if it is once again "Reality".

Yet again "Reality" is still a personal perception within itself since you have to observe and comprehend it. Although this still depends on the person especially in a sense of time. Because you could be experiencing a hallucination one second and return back to your commonly know reality.

Not unless you go with the consensus reality which is a set of agreed truths within a society, group, et cetera.
And on another note even if you say we may only be experiencing a group or society which may only be a part of our imagination. It still doesnt prove they don't exist since your mind did simulate it.

Also it has created a individuality with a personality to think and act a certain way. And please do not mistake it with a true consciousness.
Unless we were to go indepth on psychological issues such as alternate personalities. That is a completely different conversation for another time.

Even so I haven't thought of or seen any ways to prove that something does not exist.

Whoa, this is the first time that I have ever had a headache from reading what others were saying on a debate...

Anyway, I think we are going in circles, its simple, no one can say "I exist" for everything around you may be an illusion. Actually this debate can't go anywhere until someone clarifies, "reality" and "logic" here I explain, there is a "rule" that has everything heavier than air goes down, right? Well, how do we know if we are actually upside down? we may say this *points to ground* is down and this *points to ceiling* is up, but maybe its the other way around? You cannot prove anything, even if you say "gravity pulls things down" for you may not know if gravaty pulls this up. I don't mean that everyone is actually walking around upside down, but I am questioning the exsistance of "up" and "down" for people from the other side of the world would be walking "down" right? how can that happend?
Even if "gravity" pulls people to its surface you cannot say that "earth" is real or not. There are "rules" about things, but maybe those rules are just illusios barries that "stops" us from getting anything further...

I am not making sense am I? I guess, this is just a ramble going on my head, I try to clarify again. I am hold a 1 dollar bill, I "feel" the bill in my hand, but am I really? I may just be dreaming of it, I may dreaming I am typing all this down. Everything may be nothing, but what is nothing? If you start questioning your whole life, you find out that you know nothing. like "Is this flower real?" you may never know, like you don't know if there is heaven, if there is God. Maybe Jesus was just an illusion like life...

In the end, there is no answer for you must "know" if the other is real or not...
Here an example...
n + g = 4
You must know either what is "n" or "g" to find the answer
There is also this
Flower exist = you exist

So if you "kill" a flower which does exsist then you must exsist, but you don't know if the flower exist, so the whole
Flower exsist = you exist
is false...

sweatdrop sorry if I didn't clarify it enough, but this is mostly ramble from my head that I tried to make it understandable for others

This is a bit off topic. And really is going to seem a bit odd.

The greatest trick the devil ever did was convincing the world that he did not exist. I wonder how that would actually be done.

Well if you understand what I mean anyways i'll explain a bit later.
And type out the rest of my response once I get a few opinions on this.