i totally agree that the "experience of a colour" is different , for you, dog ,ant ,cat ,fish and every other human being ... BUT the triangle is still displaying the same wavelenght of light .. the triangles truth is wavelenght ... your truth is experience of seeing green light .. which is why in my post i put the line ..
now what colour is the trianlge in a room with no light ???? infact its the triangles surface properties that give the Truth about it , not the wavelenght or the experience
its also a absolute truth YOU saw it as green ..
within the situation of you viewing the triangle there are many absolute truths .. they do not contridict each other, but many may not cover the whole event .. hence Partial truth ......
part of the issue is how deep you go to get your truth ....
1 i see its green
2. my eye processes the light , tells my brain which interperates the data , and indicates it is green
3. the shape relfects light of such a wavelenght that the coulur recepor cell in my head are activated to cause my nerons to fire and signal the area of my brain that considers colours .. this reports the single matches to what i have learnt is called green ..
4. i was taught by my mother that this visual imput is called green
5. i was taught in maths that this shape is called a triangle .. which means its internal angles equals 180 degrees ...on a flat plane .
all these are part of the truth that what you saw a green triangle .. but in everyday life we only use a small faction to know its a green triangle .
we you a short hand form of truth .....
the triangle is a triangle that reflects a certain wavelenght of light .. dont change cos you or your dog or a high tech detector looks at it , or if there is no light to reflect
as to
Saying that light with a wavelength between 520 and 570 nm is green is the same as saying that boiling water is pain. Both are nonsense. It's better to say that boiling water (if touched) causes the sensation of pain, and that light with the wavelength mentioned above (if seen) causes the sensation of green.
green is those wavelenght IF the detector is YOU .. because thats the measuring scale that YOU have , if you saw colours as fish you would say those wavelenghts are Tuna ... green is just a label humans use , they are not fixed .. take a baby and you can teach it the wrong colours labels .. we learn its green or red or blue ...
Pain is less calibrated it will not tell between say 80 and 100 or 200 degrees.. pain is a inbuild warning signal of harm its a different type sensor .
your last line goes back to what i was saying above .. how deep do you want your truth .....
"that light with the wavelength mentioned above (if seen) causes the sensation of green" in a human being that has learn the labels of colours , and has its functioning eyes open ,( skin does not distingish colours) , has a normally functional brain ,and is currently looking at the triangle ... please add any more facts you like .....
also
" boiling water (if touched) causes the sensation of pain" at sea level , at higher altitudes it does not cause pain , just the sensation of warm .. note in both cases the boiling water aslo causes the sensation of wet and fluid ..
all statements are limited by how deep we are willing and/or able to go looking for the "truth" .....and by how much truth is need for the use we put that truth to ....
Edited by ikabod, : more thinks