A new way of considering values and the philosophical grounds of rights and duties I did not explained myself well then Khaled. I don´t suppose you can derive values or Ethics from Mathematics and Logic and Science; what I meant is that you can not defend values or rights that are in contradiction, or do not take very much into account, these sources of established knowledge. For example, you can not just say that gay couples should have an equal right to adopt children than heterosexual couples, before you test scientifically what is best for children, or even against what has been published in that field of research. I´m neither gay nor a person who wants to adopt, that is why this example feels neutral and easy; but I know that people involved in adopting children do care and are left with just lobbying and campaigning to set up the rules. That is not ethical, of course, or is it not Ethics just reason applied to living your life well?
I also do not claim that Mathematics and Logic are fundamental. I even tried to make clear that they are cultural products. However, Mathematics or Logic, any branch of them, any approach to them, are always reactions to some mysterious patterns that are external to these cultural systems, phenomena that exist for non human systems too and are measurable to some degree. For example: 1 + 1 does NOT equal 2 in reality; it´s an abstraction, that picks some relationships in the universe and ignore the rest. When you count two oranges, you are not taking into account the effect of their mutual interaction, their location in spacetime, the objects they are interacting with, or the fact that in the atomic level of complexity, there are no oranges at all. These are all measurable quantities; for example you can calculate the gravitational interactions between the two oranges and the oranges with the Earth; or predict that the fact that the oranges are together will increase the production of fruit flies when they go to waste, in comparison with the production of fruit flies if the oranges are separated three kilometres (becouse fruit flies go for two oranges in greater numbers than for only one). So 1 + 1, whatever the objects considered, is really NEVER 2, at least in this universe. Nevertheless, one plus one equals two is not just an absurd proposition; it does relates to the physical and imaginal world, it just does so in an abstract way. Abs is a Latin prefix meaning separation or privation; so to abstract is to pick some elements and leave the rest, becouse mental resources are limited, and we can not take into account all that exists. We usually just want some oranges and care not for their gravitational leanings or quantum interactions. Thus, our Maths and Logic are not fanciful; they just don´t account for ALL real relationships in both the physical and the imaginal o secundary worlds. Becouse some people care for oranges and others for cherries, different mathematical tools are devised and some are not that well designed. But an underlying reality or pattern exists that humans, comets, ants and water molecules are reacting to, or better said, are part of. Hammers come in different shapes and materials, but at the end of the day, a banana is not a hammer and won´t do the job. The same should apply to values and rights and duties as mental tools of our behaviour, if you really want to nail it with them. Before we all go bananas.
/