To you maybe, but not to me. You do not prove that existence exists because it is the basis on which all proofs depend.
Existence is an axiom on which all knowledge begins.
Don't convolute and complicate the issue when it is easy to understand. Check this box if you would like this submission to be considered for publication as a letter to the editor in the printed Chronicle. Be sure to include your name and affiliation. Legitimate requests for anonymity will be honored. Submissions may be condensed or edited for clarity.