From bob@RATTLESNAKE.COM Tue Jan 01 09:20:45 2002 Return-Path: X-Sender: bob@rattlesnake.com X-Apparently-To: lojban@yahoogroups.com Received: (EGP: mail-8_0_1_3); 1 Jan 2002 17:20:46 -0000 Received: (qmail 9096 invoked from network); 1 Jan 2002 17:20:46 -0000 Received: from unknown (216.115.97.172) by m11.grp.snv.yahoo.com with QMQP; 1 Jan 2002 17:20:46 -0000 Received: from unknown (HELO localhost) (140.186.114.245) by mta2.grp.snv.yahoo.com with SMTP; 1 Jan 2002 17:20:43 -0000 Received: by rattlesnake.com via sendmail from stdin id (Debian Smail3.2.0.114) for lojban@yahoogroups.com; Tue, 1 Jan 2002 17:20:28 +0000 (UTC) Message-Id: Date: Tue, 1 Jan 2002 17:20:28 +0000 (UTC) To: lojbanlists@wonderclown.com Cc: lojban@yahoogroups.com, thinkit8@lycos.com In-reply-to: <20020101163403.GA568@aerosol> (lojbanlists@wonderclown.com) Subject: Re: [lojban] Logical connective question. References: <20020101163403.GA568@aerosol> From: "Robert J. Chassell" Reply-To: bob@rattlesnake.com X-Yahoo-Group-Post: member; u=810561 Regarding truth values, Randall Nortman wrote; That is, of course, until you consider quantum physics, but I don't think Lojban's logical connectives are equipped to deal with that, nor should they be. You can do more with Lojban than you might think: you can use {jei} to indicate degrees of truth and you can use {la'a} to indicate the probability of a truth. Truth value and probability are different. There is nearly a 100% truth value that this coin is going to come up heads with a 50% probability over the long run. See page 262 of the book; Chapter 11.6, Truth-value Abstraction See page 319 of the book; Chapter 13.12, Discursives Also, to deal with your own sense of certainty or uncertainty regarding your hypothesis, look at {ju'o}. There is strongly suggestive evidence that this coin hardly ever lands and stays on its edge; it almost always comes up either heads or tails. (For {ju'o}, see page 319 of the book; Chapter 13.12, Discursives) Some years ago, I wrote up an item on how to use {ju'o} with numbers for David McAllister `certainty factors'. I can't find that note now, but you can look at my discussion of `certainty factors' at: http://www.rattlesnake.com/notions/certainty-factors.html -- Robert J. Chassell bob@rattlesnake.com Rattlesnake Enterprises http://www.rattlesnake.com