AlbertKLloyd said:
A measurement is true, an opinion is not.
That which cannot be objectively determined, quantified and qualified cannot be regarded as in the domain of truth.
But it is subjective whether a determination/quantification/qualification is objective or not. And what if we would not currently have a method to measure weight? Surely we would still have a weight. We would not be able to measure it, but it would still be in the domain of truth. This obviously applies to many things currently unknown to us, instead of weight.
AlbertKLloyd said:
A consistent reality exists, otherwise the subjectivity of observation would be self subject and there would be no consistency to measurements. The very fact that perception is subjective then evidences that objective reality and truth exist. If perception determined truth then an opinion could change how much something weighs, or how long an object is. Thus the concept that perception is determinate of truth is untenable, for no matter your perception you cannot alter that which is consistently objective.
I'd like to explore this concept of weighting (or anything similar) a bit more. We cannot determine the weight of only one thing. A kilogram is actually
this (International prototype kilogram). The only way we can determine properties such as weight is by
comparing things. When we say something weights 2 kg, what this actually means is if we place the object on a scale, and put twice the IPK on the other side of the scale, there will be a balance. There is no inherent numeric amount of weight to an object! It depends on what reference system we use, most commonly the IPK to which we assign the number "1".
So, while we may receive consistent numeric results if we all compare with the same reference system, this does not make weight an objective matter. A weightlifter will laugh at a weight of 80 kg and lift it easily, but many of us will have a lot of trouble.
Let us assume for the sake of argument that all weight is doubled. It does not matter how this is accomplished, just imagine everything suddenly is twice as heavy. We will still receive the same numbers because the relationship of any object to the IPK has not changed, as objects are now twice their previous weight, and the IPK is now twice it's previous weight as well. But everything will feel much heavier to us, and the proportions will completely change as well (items previously heavy will increase much more in heaviness than items previously light).
This example shows how we can have a situation in which we produce the same numbers from calculations/comparisons, but where the weight is not the same. In my opinion this is proof of the illusory character of numbers, and their supposed objectivity (so they are not objective). This includes the supposed objectivity of all other kinds of measurements, because all these measurements rely on the same method of picking a reference point and comparing to it, making all measurements non-objective.