How do you intend to prove they do exist?
1) By giving the simplest explanation for observations in various cases discussed on AECES top 40 website.
5) I will see if you can adequately explain the actual observations that were recorded in Eisenbeiss on AECES top 40. I think this is the most powerful case, and your explanation for it is inadequate. You do not provide an adequate reason to reject the evidence, and so you do not disprove the conclusion (from parsimony) that the source was communicating factual information that had "survived" death.