On Fri, May 13, 2016 at 10:19 AM, Luca Testoni <[email protected]> wrote: > Not only time but initial conditions too. > The result of a chaotic system is strongly dependent on intial > conditions too.
okay, let me rephrase, because i was not very clear. what i tried to say is: if we assume a precision with which we can possibly measure the initial conditions, then there is a time interval after which the system is in total uncertainty. this time interval is dependent on the initial precision, and the system itself. once i heard a claim, not confirmed, just a fun factoid, that weather has 20 days of "memory". that is, if the initial conditions change on molecular level, which is clearly unmeasurable, 20 days later the weather is totally different. that is quite literally the butterfly effect. if we were to use the weather as an entropy source, we should sample it every 20 days. the data will be true random. except, of course, the weather is public, but that aside. _______________________________________________ cryptography mailing list [email protected] http://lists.randombit.net/mailman/listinfo/cryptography
