Any process is arguably a mathematical algorithm. The process by which I sanitize water can be expressed as a mathematical algorithm, where the various components play the role of various mathematical constructs.And therein lies the problem. If you read SW patents they're usually pitched as processes over a computer device. This makes it hard to untangle from any other process that acts over some matter.With that said maybe we get rid of processes altogether. I'd say get rid of everything except drug patents. But that would require congress to sign off.

 >If you read SW patents they're usually pitched as processes over a computer device.The problem is that a computer is itself a mathematical construct. If the patents really wanted to describe a process on a device, they could not use as their "device" a Turing machine, because that is not a physical device in the sense of water sanitization. Whereas water sanitization requires the physical presence of water, a program can exist totally in theory as some bits in Wolfram's 2-state-3-symbol.That is, unless you believe the mathematical universe hypothesis, but I don't think the Court's job is to decide whether the Universe exists!I am also not a lawyer, nor formally educated in the field of law. I do know a bit about theoretical CS, though.
 Computers aren't mathematical constructs. They're simply devices, like a water bottle. But what they can compute, at least as best we understand it, is bound by what is computable by mathematical constructs, such as the lambda calculus.But with things such as DNA computers and nanotechnology, could one argue that the universe is a computer? Can everything just be described as a construction of objects in the real world with stimuli applied to it?To me it just feels like a really slippery slope. Just say "medical drugs" and leave it at that.
 >Computers aren't mathematical constructs.A particular computer is not a mathematical construct. The concept of a computer, however, is a mathematical construct; there are no physical characteristics necessary to identify something as a "computer" for the purposes of e.g. arithmetic coding. I could perform arithmetic coding with nothing but a pen and an extremely large amount of paper.
 I could perform arithmetic coding with nothing but a pen and an extremely large amount of paper.BUT a pen and paper. A patent wouldn't be just the algorithm, but also a writing device and paper.Everything is a theoretical until you do it in practice. You can't patent a cool 3D rendering algorithm. But you can patent a device that uses it and renders the output to a computer screen. This is how patents are written.
 > A patent wouldn't be just the algorithm, but also a writing device and paper.Well, yes, and if the patent says "a writing device and paper" it might be valid, because paper is a specific construct, and the patent obviously does not cover such things as e.g. a piece of cloth.Why do you use bzip2 and not bzip? Well, because arithmetic coding is covered by a supposedly valid patent. However, bzip can be executed by hand, or on any multitude of devices satisfying the requirements for Turing-completeness. The idea that a patent should preclude the writing of bzip, a purely mathematical construct, is absurd. bzip runs on an abstract device.You could, for instance, specify a specific processor in the patent, but this is not done. You could not, however, specify a processor architecture, because this is also a mathematical construct, which can be carried out on paper.Let me give you an example: My uncle knows that a cell phone is a computer. How? Well, I told him, and I'm a researcher. How do I know? Well, originally, some professor told me, and he's a professor. How does he know? Well, he or his colleague studied the literature indicating that an ARM processor is Turing-complete... which, at the end of the day, is a totally mathematical consideration, independent of the physical world except perhaps the brains which analyze it.>But you can patent a device that uses it and renders the output to a computer screen.No, because each independent part of this is some prior art. The representation of data on silicon is long since public domain, the display of silicon data on a screen is long since public domain, the x86 architecture and the GPU architecture are mathematical, and the algorithm itself is mathematical, and the combination of these is not itself novel or interesting: it is not even performed except by the end user, who must merely double-click a game icon and shuffle some bits around with a mouse.
 Let me give you an example: My uncle knows that a cell phone is a computer. How? Well, I told him, and I'm a researcher. How do I know? Well, originally, some professor told me, and he's a professor. How does he know? Well, he or his colleague studied the literature indicating that an ARM processor is Turing-complete... which, at the end of the day, is a totally mathematical consideration, independent of the physical world except perhaps the brains which analyze it.Actually I don't think its technically "Turing Complete". it doesn't have unbounded tape. In fact any given ARM processor will have a fixed addressable limit. I can certainly compute a class of things in theory that the ARM processor can't compute. There are real HW considerations that you need make when you deal with an actual physical processor that don't exist in the theoretical model.And this sidesteps questions of complexity.But this is similar to a patent on a new wing design. You can say it is simply a mathematical model of airflow and such. But the pudding is the creation, not the mathematical model of the wing.
 >Actually I don't think its technically "Turing Complete". it doesn't have unbounded tape. In fact any given ARM processor will have a fixed addressable limit. I can certainly compute a class of things in theory that the ARM processor can't compute. There are real HW considerations that you need make when you deal with an actual physical processor that don't exist in the theoretical model.Obviously -- it is a finite state machine, but this doesn't mean any less that it is a theoretical model.>But this is similar to a patent on a new wing design. You can say it is simply a mathematical model of airflow and such. But the pudding is the creation, not the mathematical model of the wing.No -- the wing is a physical object. I can hold a wing in my hand. Conversely, a patent on a wing design does not mean that I cannot use that wing design in a computer simulation of an airfoil. But a patent on bzip does mean, supposedly, that I cannot run bzip on a virtual machine. In other words, the wing design is the point, here: you could patent a specific device for running bzip, but you cannot patent bzip on all computing devices. Which, I suppose, might help to explain my point.
 According to the Flook precedent, the novelty in your invention can't merely be in the algorithm. Too bad the patent system ignores that precedent.

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