hwhatting wrote:curiouslymute wrote:at least I'm pretty sure I still exist
Salmoneus will probably tell you that this is a fallacy.

"I think therefore I am" is certainly a fallacy (or, depending how strictly you define 'fallacy', at least an argument that fails to prove what it thinks it proves). It's riddled with assumptions.
But I think people can know they exist - they just can't Know they exist, where 'Know' is a certain type of certain knowledge upon which further certain conclusions can be built. I also suspect that while we can know we exist, and probably can know we know we exist, we probably can't know we know we know we exist. However, I'm not sure about that.
I'd have to quibble with a few of their points, though.
Some mutes can't talk in any way. Psychological or neurological issues can affect all forms of communication, not just speaking.
Some mute people can speak. Selective mutism can be all but indistinguishable from other forms of mutism, if the circumstances in which the person will (/can) speak are very constrained - but these people do still have the ability to speak, and utilise that ability at times.
There's no real philosophical line between a speech impediment and mutism, is there?. If a 'speech impediment' is so severe that a person cannot be understood, this is indistinguishable from them being mute (an inability is just an insurmountable impediment), but what is and isn't understandable isn't an objective matter of fact.
Contrariwise, if a person can whisper sufficiently well to have their words heard and understood, they are not mute, they just have a speech impediment. I'm thinking here of old people I've heard talking, where either their lungs or their larynx has been damaged so badly they can only speak in a whisper - but we do not generally say that these people have become mute.
[I would think it would be more useful to define mutism not in terms of abilities but functionally, in terms of how people actually communicate, regardless of the reason. This would mean including Trappists - but then you could refine it to exclude those who specifically aver that they have intentionally chosen to avoid speech]
Anyway, thank you for your contribution. Don't worry about the necroposting - like Drydic, personally I enjoy it (though I do sometimes feel sad when I see how many people have left over the years), and since you had something useful to add it's certainly acceptable, to me at any rate.
EDIT: of course, even if we accept that we exist, that doesn't mean we can just accept that we STILL exist! Knowledge of the past is a whole different thingamajig!