What is the nature of reality?
Reference to basic building blocks in nature date back to the 5th, and possibly 6th centuries BC, from Ancient Greece and India. Such thoughts propelled a historic evolution of science and philosophy, to the point where today we are able to divide the atom into protons, neutrons and electrons, and then divide them into quarks, leptons, gauge bosons, photons, gluons and the higgs boson. We can delve even further into these elements with quantum field theory, which treats all particles as excited states of an underlying physical field. But it’s around about at this point when our understanding breaks down.
Our scientific understanding seems constantly to change, as we doggedly root down further and deeper into what we can analyse. Yet in everything we have found, or even thought of, we have always discovered two things: mathematics, and potential.
Galileo: “The book of nature is written in mathematical characters.”
Cartesian doubts come mostly on two levels: horizontal scepticism, whereby we doubt people’s expectations that just because something has happened a hundred or a thousand times, it will necessarily happen again; and vertical scepticism, whereby we doubt inferences and implications. Both doubts are rational, and we could perhaps imagine a reality in which these forms of horizontal and vertical logic don’t serve us very well. Yet in this reality, they do. Indeed Einstein found the numbers to suggest that the universe is expanding in 1916, and yet despite the fact that he thought it to be illogical and dismissed the maths, Edwin Hubble later found clear evidence of the universe’s expansion. Indeed if you look at the history of discovery in science, particularly related to those particles discussed above, you’ll often find that people knew about the particles before they found evidence of their existence. The reason why we can do this is that all of reality seems to obey mathematical rules. 1 + 1 always equals 2, no matter where or when you are. And this also explains why potential seems to lie at the heart of reality, for as I argued in ‘Does Nothing Come from Nothing?’ the existence of zero in addition to, and separate from, nothing, supposes that positives and negatives can spring into existence where before we would have been able to perceive nothing.
Plato argued that numbers are not simply human constructs, but are actually real, whether or not we can actually see them. Max Tegmark went so far as to theorize that the universe itself is made of maths. Yet what are numbers? Why do we ‘sentient beings’ come pre-equipped with ‘number sense’, such that even if we don’t know the words for numbers we can instinctively understand what the difference is between encountering two dogs, three dogs and more? Why do we find beauty in mathematics? Take sounds for instance; those we perceive as a threat or warning follow different mathematical rules (if you draw patterns based on the notes) to those in which we find beauty.
Defined linguistically numbers are values used to express quantities, or more fundamentally they are information. But it seems hard to think of information being at the heart of all things, since insofar as everything has an information content or position, even if that position is set at zero, information can easily be thought of as a dimension (in fact even your shadow is an example of your informational content). And current scientific understanding says that dimensions sprang into existence with the Big Bang, which suggests that it is possible for dimensions not to exist (honestly, I’m not sure I can buy that).
What do you think numbers are? Are they the most fundamental aspect of reality? Are they the only reality? Could there be something other than maths? Are numbers simply a construct within our Universe?
What do you think?