Aha, Nick! You have Curried the function! Having Ham and Eggs is a function.
Having Ham and Eggs given Having Eggs is a Curried function, which now turns on whether you have ham or not as its one argument. Just to cause trouble, Eric > On Feb 10, 2021, at 1:41 PM, <[email protected]> > <[email protected]> wrote: > > Frank, > > Is my ham sandwich example apt, or not? > > N > > Nick Thompson > [email protected] <mailto:[email protected]> > https://wordpress.clarku.edu/nthompson/ > <https://linkprotect.cudasvc.com/url?a=https%3a%2f%2fwordpress.clarku.edu%2fnthompson%2f&c=E,1,WSUPnF7Jhi76RqhC7BQyRt3UVaWfTN_l4mkoMi5l2QObh_1AFwjmDtjmqqjaGGwPP97nsORZJ8KfDzA-XM0NOHK4eyaBLYwFIQfGWN97shYwgi0,&typo=1> > > From: Friam <[email protected] <mailto:[email protected]>> On > Behalf Of Frank Wimberly > Sent: Wednesday, February 10, 2021 11:38 AM > To: The Friday Morning Applied Complexity Coffee Group <[email protected] > <mailto:[email protected]>> > Subject: Re: [FRIAM] > PM-2017-MethodologicalBehaviorismCausalChainsandCausalForks(1).pdf > > "Screening off" is an informal term of art in causal reasoning. If A,B, and > C are random variables, the Causal Markov Condition asserts that if A causes > B and B causes C then knowing the value of A provides no information about > the probability density of C over knowing the value of B. > > It is also said that B screens off the causal effect of A on C. > > I hope that helps, > > Frank > > --- > Frank C. Wimberly > 140 Calle Ojo Feliz, > Santa Fe, NM 87505 > > 505 670-9918 > Santa Fe, NM > > On Wed, Feb 10, 2021, 10:07 AM <[email protected] > <mailto:[email protected]>> wrote: >> Hi, All, >> >> >> >> If any of you had any spare brain time, I am interested in the attached >> VERY SHORT >> <https://documentcloud.adobe.com/link/track?uri=urn:aaid:scds:US:a6e9c10b-06dc-4ea1-8ffa-d450df62489a> >> article: >> >> >> >> I am struggling here with the idea of "screening off". Does it mean more or >> less than the following: Granted that, If I had ham, and I had eggs, I >> would have ham and eggs, having eggs screens off having ham from having ham >> and eggs? Screening off seems a very odd metaphor. Is it a term of art in >> logic? >> >> >> >> Also, a general problem I have with causality: My understanding of >> causality is that event A can cause event B if and only if A is >> independently known from B (an event cannot cause itself) AND occurs prior >> to B Now imagine two perfectly meshed gears, such that motion in one is >> instantly conveyed to the other. I turn gear A and gear B turns. Has the >> motion in A caused the turning of B or has my turning of A caused the motion >> of B? With the gears, this may just seem like a fussy “in the limit” sort >> of question, but there seem to be other phenomena where it’s worth asking. >> Does the discharge of potential along the ionized (?) path CAUSE the >> lightning? >> >> >> >> I realize that the rest of you have spouses, dogs, cats, hobbies, and day >> jobs, but any off hand thoughts you have on these matters would be greatly >> appreciated. >> >> >> >> Nick >> >> >> >> You can view >> "PM-2017-MethodologicalBehaviorismCausalChainsandCausalForks(1).pdf" at: >> >> https://documentcloud.adobe.com/link/track?uri=urn:aaid:scds:US:a6e9c10b-06dc-4ea1-8ffa-d450df62489a >> >> <https://documentcloud.adobe.com/link/track?uri=urn:aaid:scds:US:a6e9c10b-06dc-4ea1-8ffa-d450df62489a> >> >> >> ________________ >> >> Sent with Adobe Document Cloud. Click on the link above to access the file >> online. 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