From mboxrd@z Thu Jan 1 00:00:00 1970 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00 autolearn=unavailable autolearn_force=no version=3.4.4 Path: eternal-september.org!reader01.eternal-september.org!reader02.eternal-september.org!feeder.eternal-september.org!weretis.net!feeder4.news.weretis.net!news.roellig-ltd.de!open-news-network.org!peer03.am4!peer.am4.highwinds-media.com!peer03.iad!feed-me.highwinds-media.com!news.highwinds-media.com!border1.nntp.dca1.giganews.com!nntp.giganews.com!buffer1.nntp.dca1.giganews.com!buffer2.nntp.dca1.giganews.com!nntp.earthlink.com!news.earthlink.com.POSTED!not-for-mail NNTP-Posting-Date: Thu, 11 Jan 2018 08:40:33 -0600 From: Dennis Lee Bieber Newsgroups: comp.lang.ada Subject: Re: Simulating the rolling of dices to produce truly random numbers? Date: Thu, 11 Jan 2018 09:40:33 -0500 Organization: IISS Elusive Unicorn Message-ID: <4mte5dps11pc68n5n6094vsdjenag06v4o@4ax.com> References: <0f1048d2-187c-4578-ae7b-d209e229bfbe@googlegroups.com> <8f2e0ccd-10c8-40c6-a2e4-6d17ba2bc250@googlegroups.com> User-Agent: ForteAgent/8.00.32.1272 X-No-Archive: YES MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-Usenet-Provider: http://www.giganews.com NNTP-Posting-Host: 108.73.118.61 X-Trace: sv3-wuMCdDgojC/213+q+Rkd7nmHGTGHYcrazBYw49U6MCOX6bKt0PU6f6KqLqTXJ276l+qgGnFhSpknsp9!B3oQSAJL/fR3jDmQxJWGJB/nCapUVPddbff7oe+X4Vff0PsbAZ33JG4iU/MPcYWBnAZyOi0NUIhe!aNjXMoSBz9Vc5LK70Xwi0Rhnr8k= X-Abuse-and-DMCA-Info: Please be sure to forward a copy of ALL headers X-Abuse-and-DMCA-Info: Otherwise we will be unable to process your complaint properly X-Postfilter: 1.3.40 X-Original-Bytes: 2071 X-Received-Bytes: 2193 X-Received-Body-CRC: 3738028149 Xref: reader02.eternal-september.org comp.lang.ada:49869 Date: 2018-01-11T09:40:33-05:00 List-Id: On Thu, 11 Jan 2018 04:45:27 -0800 (PST), AdaMagica declaimed the following: >Am Mittwoch, 10. Januar 2018 23:54:46 UTC+1 schrieb Mace Ayres: >> If I choose n among the set 1..500, based on my own sense of randomness, is that random? > >Depends on how you choose. If you take 500 cards and shuffle suffiently after each choice, the outcome depends on your shuffling skills. Result might be quite random. > Don't know if it applies with 500 cards... but 8 perfect riffle shuffles with a standard 52 card deck will restore the deck to its starting arrangement -- so no randomness there. One could probably argue that any number of perfect riffles won't add randomness -- Wulfraed Dennis Lee Bieber AF6VN wlfraed@ix.netcom.com HTTP://wlfraed.home.netcom.com/