From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) by finch.gentoo.org (Postfix) with ESMTP id 7E32A1392EF for ; Sun, 29 Jun 2014 00:53:37 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 9C4EFE0AB2; Sun, 29 Jun 2014 00:53:32 +0000 (UTC) Received: from mail-la0-f47.google.com (mail-la0-f47.google.com [209.85.215.47]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 66D83E0AA0 for ; Sun, 29 Jun 2014 00:53:31 +0000 (UTC) Received: by mail-la0-f47.google.com with SMTP id s18so3865162lam.6 for ; Sat, 28 Jun 2014 17:53:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :content-type:content-transfer-encoding; bh=vPrc/G5d8wv3axMUVxedRYDU3ESv2Fv4J4MCB2ySZtA=; b=CDKhmdzwaJc0MnrLhP033h5/VaR20iJvm69Q+JE3OvRGnD40jyPKI4L9xCU5t/lcNT qqCO9X7YmhXlKr36IeD6+IJ5Yuu/M/i98UzHfVWY3All0SsgO6Y5FEOCpjO4tIzVxLFc 5RN9Ajh6NhXk3eXI+UbKFiIduFOZjvGeaqdSNTWicQmcOJNxqxTlZx75zmyzI6mTPfo/ V0KA+q4KuJHoqumPCnwm8A8NvDZBrzbKJbaQ2HP3ojokDlELrzVy6R7o+wivXm7R6734 pelgDAK9e2yMvfYgUMPTpby7L/ls5IOzP7R5Em8fkThH7lZ3GuKbwr2D3fRPf5YUe4JC xpXg== X-Received: by 10.152.6.37 with SMTP id x5mr23445715lax.15.1404003209746; Sat, 28 Jun 2014 17:53:29 -0700 (PDT) Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 Received: by 10.114.170.166 with HTTP; Sat, 28 Jun 2014 17:53:08 -0700 (PDT) In-Reply-To: <87k380360p.fsf@nyu.edu> References: <20140606025619.GB3837@solfire> <20140606210329.GA1631@lyseo.edu.ouka.fi> <827EEF66-5787-4078-B18E-3D95F13B3902@iki.fi> <0ko38b-2a.ln1@hurikhan77.spdns.de> <87k380360p.fsf@nyu.edu> From: =?UTF-8?B?Q2FuZWsgUGVsw6FleiBWYWxkw6lz?= Date: Sat, 28 Jun 2014 19:53:08 -0500 Message-ID: Subject: Re: [gentoo-user] Re: Re: OT: Mapping random numbers (PRNG) To: gentoo-user@lists.gentoo.org Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Archives-Salt: f84f9e1c-656f-414a-83c5-37f2aad861eb X-Archives-Hash: aac56f175e3731b59aef349a88061384 On Sat, Jun 28, 2014 at 7:37 PM, wrote: > On Sat, Jun 28 2014, Canek Pel=C3=A1ez Vald=C3=A9s wrote: > >> That doesn't matter. Take a non-negative integer N; if you flip a coin >> an infinite number of times, then the probability of the coin landing >> on the same face N times in a row is 1. > > This is certainly true. > >> This means that it is *guaranteed* to happen > > That is not as clear. Let me be more precise (and please correct me if I'm wrong): It is guaranteed to happen at some point in the infinite sequence of random flip coins, but we cannot know when it will happen, only that it will happen. That's the way I got it when I took my probability courses, admittedly many years ago. In any way, even if I'm wrong and it is not guaranteed, the main point remains true: the probability of getting a large sequence of the same number from a RNG is 1 for every true random RNG, and therefore seeing a large sequence of the same number form a RNG doesn't (technically) means that it is broken. Regards. --=20 Canek Pel=C3=A1ez Vald=C3=A9s Profesor de asignatura, Facultad de Ciencias Universidad Nacional Aut=C3=B3noma de M=C3=A9xico