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## Re: [ontolog-forum] [ontology-summit] Estimating number of all known fac

 To: "[ontolog-forum]" Ontology Summit 2012 discussion , "lavern@xxxxxxxxxxxx" Simon Spero Tue, 22 May 2012 19:52:41 -0400
 I'm not sure that there is any simple relationship between the total amount of data that is stored on disk and the number of known facts; I'm not even sure that there's there's a simple relation between the amount of data and the amount of information (especially where DNA and RNA sequence data; there's a lot of similarity between Lampreys).   I'm also not sure that there are any useful answers without further qualification to question of  the number of known facts in the universe that do not require accepting the KK-thesis (that knowing something means that you know that you know it).  One could (de)generatively argue that the number is  some uncountable infinity (e.g. it is a fact that: {1.0} is a member of the power set of real numbers, and that fact is known in the universe).  SimonOn Tue, May 22, 2012 at 6:28 PM, Obrst, Leo J. wrote: I think if you consider the basic fact as either a mono or binary predicate, and then everything else is derived from those, you can gauge.   The total sum of stored data has been estimated (not quite the same notion): http://www.bbc.co.uk/news/technology-12419672, http://hardware.slashdot.org/story/11/02/12/1934244/the-sum-total-of-the-worlds-knowledge-250-exabytes. But apparently that was as of 2007 and just published in Science Express in February, 2011.   See http://www.sciencemag.org/content/332/6025/60.abstract for the original story, once you peel back the blogger crap.   A little knowledge is a dangerous thing.   Thanks, Leo   From: ontology-summit-bounces@xxxxxxxxxxxxxxxx [mailto:ontology-summit-bounces@xxxxxxxxxxxxxxxx] On Behalf Of matthew lange Sent: Tuesday, May 22, 2012 6:06 PM To: lavern@xxxxxxxxxxxx; [ontolog-forum]; [ontolog-summit] Subject: Re: [ontology-summit] Estimating number of all known facts   Billions is several orders of magnitude too small, to be sure--but then again you were talking about beholders, not the facts themselves...wiuch leads me to think that we perhaps could estimate a ballpark average number of facts that a beholder needs to know for various levels of sophistication in particular knowledge domains--including "common sense". In addition to ability--Malcolm Gladwell's, 10,000 hours must be roughly translatable in terms of "knowable entities". Just looking for ballpark here...surely someone has investigated this in terms of knowledge engineering... On Tue, May 22, 2012 at 2:28 PM, LaVern Pritchard wrote: The number of known facts is unknowable because a fact is in the eye of the beholder or a label, there are billions of beholders and labelers, no way to know what they individually know or how they label or to eliminate duplicates. There are estimates I've seen from time to time about the amount of "stuff" in electronically stored form. But facts are slippery things. ___________________________________________________ LaVern A. Pritchard - Pritchard Law Webs Publisher, LawMoose / MooseBoost - www.lawmoose.com Practitioners' Legal Problem Solving Framework Law Practice Intellectual Capital System Semantic Legal Search Assistant 900 Flour Exchange, 310 4th Av S, Mpls, MN 55415 612-332-0102 - lavern@xxxxxxxxxxxx ___________________________________________________ On 5/21/2012 2:59 PM, matthew lange wrote: Hi everyone, I am trying locate published works related to estimates on how quickly our web of knowledge is expanding: that is, estimations on the number of known facts in the universe, how quickly this is growing, knowledge domains with particular growth rates, etc. I would be delighted if someone could point me in the right direction, especially toward peer reviewed resources. Also, my apologies for cross-posting, I do practice good netiquette, but I didn't know which list was more appropriate--happy to receive guidance here as well. 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 Current Thread [ontology-summit] Estimating number of all known facts, matthew lange Message not available Re: [ontolog-forum] [ontology-summit] Estimating number of all known facts, matthew lange Re: [ontolog-forum] [ontology-summit] Estimating number of all known facts, Obrst, Leo J. Re: [ontolog-forum] [ontology-summit] Estimating number of all known facts, Simon Spero <= Re: [ontolog-forum] [ontology-summit] Estimating number of all known facts, John Bottoms Re: [ontolog-forum] [ontology-summit] Estimating number of all known facts, Adrian Walker Re: [ontolog-forum] [ontology-summit] Estimating number of all known facts, Christopher Menzel Re: [ontolog-forum] [ontology-summit] Estimating number of all known facts, Simon Spero Re: [ontolog-forum] [ontology-summit] Estimating number of all known facts, Obrst, Leo J. Re: [ontolog-forum] [ontology-summit] Estimating number of all known facts, William Frank Re: [ontolog-forum] [ontology-summit] Estimating number of all known facts, Christopher Menzel Re: [ontolog-forum] [ontology-summit] Estimating number of all known facts, John F Sowa Re: [ontolog-forum] [ontology-summit] Estimating number of all known facts, William Frank Re: [ontolog-forum] [ontology-summit] Estimating number of all known facts, John Bottoms