Presentism: "the view that only present things exist".
Can I be sure I exist if the only prove I have of it is my own consciousness?

I can't prove I don't exist, can I? However, if other people can't prove that I exist, could I do it?

As a language example: if a majority of people start writing "bottle" as "botle", there will come a time when "botle" is the correct term. The same happens with the meaning of some words.

But then, of course (now I see), we cannot take this same process to the existencial department, cause a word is not conscious.

Maybe the absurd of it is its appeal for me. Like that book by Dostoievski, "Notes from Underground". Does the underground man exist? or needs to?

Maybe "existence" was an exaggerated term. Maybe it would make more sense if I had said: "existence is the capacity of making yourself worth of something", but then I would not be referring to existence at all.

I do not exist for those who will never know of my existence. If nobody knows of my existance, do I exist?, or do I matter? Life is all around me, but it doesn't acknowledge my existence, because it does not need to. Do I exist if I'm the only one who knows of my existence?

(maybe I recognize it doesn't make any sense)

That seems more like it.

Maybe now we can start a discussion

I see. And now I can't say I like the way I wrote it, or what I wrote. I'll try to delete this and write it again, this time with more self consciousness about what I'm saying.