Questioner wrote:Implicator wrote:
So what is this, an appeal to lost time?
Something is worthy of being studied just as long as it doesn't require contemplation around a coffee table?
You speak of study. How can you study anything if your own existence is in question? This type of thinking is a dead end, for it will rarely yield anything but further questions.
I do not doubt my own existence - I presuppose that I exist. That does not mean that I have
proven I exist, however, which is the point I was making to Phoenix. Sometimes it makes rational sense to presuppose something (like the veracity and applicability of the laws of logic, for instance), even though one hasn't proven they exist, or that they are what they are presupposed to be.
Questioner wrote:Implicator wrote:Perhaps - presuppose is much more accurate. That one must presuppose one's existence in order to argue for it can be shown by the following argument:
1) I can hear myself speak
2) Hearing myself speak indicates I exist
3) Therefore, I exist
Ok, if you prefer to have someone else validate your existence, look to your left and ask the person if they can hear you, and if they can see you. Then have them pinch you to make certain that all is in order.
In order for someone else to prove I exist, I must experience them, no? I must experience them telling me that they heard me ... I must experience them pinching me. And so if you replace premise 1 with "I hear someone else tell me they heard me" or "I felt that person pinch me" you don't make any progress, because
I am still right there in the first premise, being presupposed.
Questioner wrote:Or simply come to the rational conclusion that you are not 1) asleep and dreaming, and 2) you do, in fact, have a direct influence on the world around you.
I don't dispute that it is rational to presuppose that I exist - I am simply drawing a distinction between presupposition and proof.
Questioner wrote:Implicator wrote:Notice the use of the term "I" in premise #1. That "I" appears in a premise, while the existence of "I" is the conclusion means that the argument is circular in nature. I must presuppose "I" in order to argument for my own existence.
There is nothing erroneous about this - it is clear from evaluating the argument in syllogistic form.
It is semantics. It is philosophical fodder. It is argument for argument's sake, interesting, but of little consequence.
It demonstrates the circular nature of attempting to prove that I exist.
I