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#5106·Tyler MillsOP, 3 days agoFor the changes made by a source of variation to be dependent on the content of any knowledge in the target, the source would have to contain knowledge itself. (The DNA mutation sources do not.) Blind changes are dependent on the medium in which information is contained, like an A versus a G in a strand of DNA (assuming these are information media). But the change made to the A or G by the cosmic ray is independent of the information they are hosting, if any. Any changes by the ray are dependent on the physical/chemical structure of the target, the substrate. Information is substrate independent. It is not the information stored in the A or G that is determining what changes are made to them.
That these external sources of variation in the case of DNA do not themselves contain knowledge is happenstance, another special case. A source of variation acting on a given set of knowledge can be knowledge-bearing while still being epistemically external to the target (making only blind changes to it), so long as the variations do not depend on the specific content of the knowledge in the target. So: set A is altered by set B, each are knowledge-containing, but knowledge in B does not pertain to A.