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thegrons
What's the big uproar of the "problem with the material conditional"?
We see many arguments that are valid but untrue. For example:
All men are mortal.
Socrates is a man.
:. Socrates is mortal.
Here we don t know the truth value of the first premise; for we will never know until the last man on earth had died. So we cannot ever know if this is a true and valid syllogism. This argument We see many arguments that are valid but untrue. For example:
All men are mortal.
Socrates is a man.
:. Socrates is mortal.
Here we don't know the truth value of the first premise; for we will never know until the last man on earth had died. So we cannot ever know if this is a true and valid syllogism or (modus Ponens). Same with the material conditional when the antecedent is necessarily false. So I don't see why we don't throw our hands up about every false valid argument. What say you? The problem with the material conditional may be vacuously valid, yet untrue.
3 AnswersPhilosophy3 years agoThe sun burns about 60 ft in diameter per day, this would mean that 100,000 years ago it would have been twice its size. Could life exist?
At the rate of 60 ft. per day (I'm assuming a constant rate), then 20 million years ago the surface of the sun would have touched the surface of the earth. Consider the gravitational pull of the sun millions of years ago, as well as the heat and you must accept a young universe theory.
27 AnswersAstronomy & Space4 years agoIs a non sequitur really just another way of describing an invalid or unsound argument?
Can this be applied to both induction and deduction in that is speaks with a tad bit more precision with regards to the conclusion not following from the premises?
2 AnswersPhilosophy4 years agoDoes anyone think the Butterfly Effect is real?
I have read the Chaos theory which ostensibly grounds this proposition; however, we have never observed a causal nexus, nor is the causal chain of events verifiable. Frankly if one is to believe in the Butterfly Effect they must succumb to the ontological argument and admit to an unmoved mover who has the power of self existence, and self movement.
7 AnswersPhysics4 years agoDoes Set Theory ground mathematics?
Seems to me that set theory is merely calling a rose by another name. Instead of using abstract numbers, set theory employs the abstract logical concepts on sets. Instead of saying the numeral 1 + the numeral 1 = 2; set theory uses material objects to put into sets and counts them. But isn't this very similar to saying 3 squared = 9? Everything in math & logic boils down to primitive operators and "things" to count, BUT it is really the same thing, we merely substitute numerals for sets, and numbers for items? Maybe I'm being overly critical. But it seems as though everything is really the product of how our reasoning interacts with reality.
3 AnswersMathematics4 years agoI have a Canon 60D and have trouble shooting homes that are empty and poorly lit.?
When they have furniture they seem to do better but 4 walls in bad lighting doesn't do well even after I photoshop. Would a full frame camera make much of a difference?
5 AnswersCameras6 years agoIs an infinite universe an example of self-creation?
I have heard it said that an infinite universe is "Self-creation with a vengeance". I am having a little trouble since the term infinite seems to preclude any sort of creation? on the other hand I think that if one wishes to believe in an infinite universe they must show some aspect of the universe that is immaterial and eternal in nature; and this would exclude any aspect of the extended material universe as we know it today. Thus matter, waves, fields would also be excluded from an eternal "something" if we are to assign a "real ontology to things like fields and energy. But again my question is "How is an infinite universe an example of self-creation"?
4 AnswersReligion & Spirituality6 years agoI am having trouble with RAW images using my Canon 60D.?
Can someone help me? When I bracket a shot in RAW the +2 exposure shot in RAW causes problems in that it picks up a lot of red in the skyline where as the JPEG shots are fine. I am not sure why it does this? It looks even worse when I merge all three shots for HDR. The regular exposure is fine as well as the under exposed shots? This occurs even when the sun is directly overhead and even behind me with a 2:00 PM position in the sky.
This only seems to happen out doors or in situations of high lighting. Even with the sun overhead i still can't get a good shot of the sky? Here is the link where I posted the three shots, the one with the red in the skyline is the +2 exposure value shot in RAW, then the one with the extreme gradient is a shot where I merged all three shots at =2, 0 +2 exposure vales, and the JPG shot at +2 which is washed out, BUT seems to be fine when I merge the JPGs for HDR https://drive.google.com/folderview?id=0B5A3K_IsU4...
3 AnswersCameras6 years agoCanon 60D sensor cleaning?
I have been manually cleaning my image sensor, I turned off the automatic sensor cleaning function because I thought it might introduce more dust on to the sensor. Should I do this or turn it back on?
6 AnswersCameras7 years agoshooting with Canon 60D with sun in frot?
I have a Canon 60D with a lens hood and the kit lens and a 10mm-18mm lens. When I shoot and the sun is as high as 5:00 I get a strange delineation between the sky blue and a dark blue that runs across the sky on an angle with a bit of an arc. How can I avoid this? It is not even close to a gradient, and no lens flares just the two shades of blue that are tough to fix in photoshop
3 AnswersCameras7 years agoCanon Rebel VX vs canon EOS 60d?
Is there much difference in the image quality between these two cameras? Maybe in lower lighting? I know one has video (which I really don't need) but more concerned with shooting better EV bracketed shots for HDR.
Thanks
2 AnswersPhotography7 years agodetermining depth of field and HDR photography?
Hello I have a Canon Rebel and just bought a EF-S 10-18mm lens. I know there is a crop factor of 1.6 so the 10mm is really 16mm. My question is this. I have downloaded two apps for calculating the depth of field. This is important because I shot rooms in homes for Realtors and then HDR the bracketed photos and I don't want any part of the room to be out of focus but at the same time I think it best to keep the f stop as small as possible so I don't end up with a long shutter and noise. How do I use these apps?
My thought for shooting was this, pick a piece of furniture in the middle of the room and calculate the dof so that there is nothing outside the front point of the dof and then set the aperture so that the rear dof is beyond the far wall in the room. One of the apps does have a place to enter the x1.6 factor and the other doesn't. Again my main goal is the entire room being in focus and the lighting.
I also thought that if the room is dark I can set my EV bracketing to 0, +1, +2 does this make sense for a dark room?
Thanks!
3 AnswersSculpture7 years agoexposure bracketing with Canon Rebel XS?
Hello I have been starting with some HDR and bracketing with my Canon Rebel XS using the full 2 stops on the exposure meter. I was shooting inside a home with low lighting and was hard to get an over exposed shot. I shot this in the Av mode to keep the aperture the same on all three shots, and I am curious if there is a way to increase the exposure to lighten the +2EV shot?
Any tricks or should I just bring a lamp with me on these shots? The photos came out OK but I would have preferred them a bit lighter.
3 AnswersPhotography7 years agoSEO and Google?
One of my websites just got pushed back to page 3 and 4 on 20 keyword searches and this happened overnight. I have been going through the site and changing things since we added a new IDX so I had to add the maps to all 200 listings and in so doing I changed the articles and added some keywords such as Wilmette Realtor in the custom doc title that wasn't there before. The article title may have been "Homes for sale on Elm Street and I changed the doc title to Homes for sale on Elm Street | Willmemette Realtor.
Since this has happened I have also gone through and started to de-optimized the articles by changing the anchor text of the links leading to more homes for sale in Willmette (where as that was the anchor text) and now I am writing click here as the anchor text so it would read see more homes for sale in Willmette click here.
Is Google penalizing for using keywords in the anchor text?
Thanks,
John
4 AnswersSearch Engine Optimization7 years agodoes having interior links open in new window hurt the bounce rate?
When I link to another page on my site, if I have that link open in a new tab; will this have a negative impact on the bounce rate and seo?
2 AnswersGoogle7 years agoImage widget doesn't work on mobile version?
Hello I have an image widget on the home page of http://billgemmill.com/ that says SEARCH HOMES in the home middle widget section, it works on the desktop but not on the mobile phone. I tested the image widget in the top right header and it does work so there is something about the middle section that doesn't like the image widget.
Any help?
Thanks,
John
1 AnswerProgramming & Design7 years agoDo 404 redirects hurt your ranking?
I have a plugin called redirect for my Word Press website and I turned a few posts into pages so I had to redirect the post tag url's that got indexed back to the page and I also renamed a few pages so I had to redirect the old url to the new page name. The question is: two years ago Google took months to un-index a page but seems to do it over night now, I fear that keeping these redirects is keeping the old URL alive on google. So I am thinking about slowly deleting maybe 6 redirects at a time and letting them "burn off". Is this necessary or is having 85 redirects on my site not going to hurt it?
Thanks!
1 AnswerSearch Engine Optimization7 years agopage load speed?
I have built several websites with a large slider with some real nice photos and I think these photos may be slowing down the site speed; at least on loading the home page. Can someone look at the site and tell me how to keep the pictures to fit the dimension of the slider but speed up the site? Maybe reduce the resolution? But I don't want to go too low and lose the clarity. I wonder if the sheer size the the slider is the culprit? Is there a plugin to speed this up?
Thanks
3 AnswersProgramming & Design7 years agowhat do we call this argument?
If anyone is human then they are mortal
socrates is human
therefore socrates is mortal
I know this is valid but not true. Not true because we dont know that all humans are mortal, this premise is inductive and strong but not true. So what do we say of the entire argument? Is it true with a fallibility caveat? We cant say it is false and trying to call it indeterminate would entail our calling every inductive argument indeterminate and this would undermine the value of calling arguments weak or strong
5 AnswersPhilosophy7 years agobluetooth mouse for samsung galaxy note 8.0?
Does anyone know of a bluetooth mouse that will works with my Samsung Galaxy Note 8.0 Pad? I bought one on ebay and it doesn't bind; I have a blue tooth full size folding keyboard and if I get the mouse I will have the perfect mini computer for meetings?
Thanks,
JOhn
2 AnswersAdd-ons7 years ago