I think it only proves that I did not know you yesterday. . . You are right, of course, both in citing inversions (which is why they are disallowed in logic) and in seeing that they are inapplicable to the question of issuance.
As for alive or dead, well, what sort of lag time goes your ISP have? Wm Voss (hoping it is less than zero) -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of John Bayle Sent: Saturday, 28 June, 2003 18:15 To: [EMAIL PROTECTED] Subject: Re: [LegacyUG] Double Dating Wm Voss wrote: > As I said, you can not prove a negative -- not now and certainly not then. > The very best you can say is an individual had "no acknowledged issue" which > is still to murky to warrant a check off. Ya know William, I used to think that, but I think now I've changed my mind. You can prove a negative by proving a positive that also proves a negative of the positive! For example: In Genealogy, if one accepts contemporaneous documents as proof, say you had a Birth Certificate that Abraham Lincoln was born in 1804. Since people are only born once, that would prove that he was not born in any other year. However, if you choose not to accept such documents as proof, then the fact that I am a living adult today proves that I was not born yesterday. Or in my case even a few years ago. It also proves that I am not dead. So some negatives can proven where postive can be "inverted" to make a negative. But for the cases previously discussed on this thread, I don't see any such "invertable" positives that can be used in such a fashion. jr Legacy User Group Etiquette guidelines can be found at: http://www.LegacyFamilyTree.com/Etiquette.asp To find past messages, please go to our searchable archives at: http://www.mail-archive.com/legacyusergroup%40mail.millenniacorp.com/ To unsubscribe please visit: http://www.legacyfamilytree.com/LegacyLists.asp Legacy User Group Etiquette guidelines can be found at: http://www.LegacyFamilyTree.com/Etiquette.asp To find past messages, please go to our searchable archives at: http://www.mail-archive.com/legacyusergroup%40mail.millenniacorp.com/ To unsubscribe please visit: http://www.legacyfamilytree.com/LegacyLists.asp
