John Mikes wrote:
...Rectangles are not found in nature and not are numbers; both are
abstractions of things we see in nature...
Pray: what things? and how are they 'abstracted into numbers?
(Rectangles etc. - IMO - are artifacts made (upon/within) a system of
human application).
Yet
Bruno Marchal wrote:
Tegmark argues that reality is a mathematical structure and states that an
open problem is finding a mathematical structure which is isomorphic to
reality. This might or might not be clear: the mathematical structure with
the property that all mathematical structures can be
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