Dear Francesco
Thank you for your interest in my essay.
As you say: В«My point is that despite being physical, [velocity] can't exist by itself. It requires a relation with another physical system...What if all physical properties were like velocity.
I just came to that with mathematics thanks to Planck's units (not just Planck's lengths). Perhaps, as a philosopher, you can specify which philosophers have used the principle of opposites, might otherwise stated? In Nāgārjūn it is: „The determination of a thing or object is only possible in relation to other things or objects, especially by way of contrast". BTW, I use the principle of opposites, thanks to a contemporary philosopher, but I do not find it in contemporary physics.
You have wrote:
2. Things are relationships. I have wrote relationship are fundamental, so basicly we agree.
Your is also an interesting essay that worths an high rate.
Regards,
Branko