I wouldn't say that being found in nature means that something is not made up. Issus coleoptratus evolved gears long before humans invented them, yet gears seem purely phenomenal -- I wouldn't expect the noumenon to have anything directly corresponding to gears in it, "gear" is just a useful concept we have that lets us categorize part of an insect or a bicycle (both of which are made up themselves, of course).
There may be discrete math in the noumenon, but I'm not convinced of that. For all I know the noumenon could be dealing in something else entirely, and math might just be a really useful tool we came up with (like classical physics, and probably modern physics). Math is the simplest case you can make, but I don't see a compelling reason to accept it as a given.
There may be discrete math in the noumenon, but I'm not convinced of that. For all I know the noumenon could be dealing in something else entirely, and math might just be a really useful tool we came up with (like classical physics, and probably modern physics). Math is the simplest case you can make, but I don't see a compelling reason to accept it as a given.