In the most basic case, simply ignore the possibility that this can happen.
In the more advanced case, I would say that you need to identify robust features of external reality using the first sensory apparatus you have. I.e. construct an ontology. Once you have that, you can utilize a different set of sensory apparatus, and note that many robust features of external reality manifest themselves as an isomorphic set of regularities in the new sensory apparatus.
For example, viewing a cat through an IR camera will not yield all and only the regularities that we see when looking at a cat through echo-location or visible light. But there will be a mapping, mediated by the fact that these sensor systems are all looking at the same reality.
In the simplest case, the initial agent doesn’t allow changes in its I/O construction. Any modified agent would be a special case of what the initial agent constructs in environment, acting through the initial I/O, using the initial definition of preference expressed in terms of that initial I/O. Since the initial agent is part of environment, its control over the environment allows, in particular, to deconstruct or change the initial agent, understood as a pattern in environment (in the model of sensory input/reaction to output, seen through preference).
Of course, you’re still taking sensory inputs as primitives. How do you then evaluate changes to your sensory apparatus?
In the most basic case, simply ignore the possibility that this can happen.
In the more advanced case, I would say that you need to identify robust features of external reality using the first sensory apparatus you have. I.e. construct an ontology. Once you have that, you can utilize a different set of sensory apparatus, and note that many robust features of external reality manifest themselves as an isomorphic set of regularities in the new sensory apparatus.
For example, viewing a cat through an IR camera will not yield all and only the regularities that we see when looking at a cat through echo-location or visible light. But there will be a mapping, mediated by the fact that these sensor systems are all looking at the same reality.
In the simplest case, the initial agent doesn’t allow changes in its I/O construction. Any modified agent would be a special case of what the initial agent constructs in environment, acting through the initial I/O, using the initial definition of preference expressed in terms of that initial I/O. Since the initial agent is part of environment, its control over the environment allows, in particular, to deconstruct or change the initial agent, understood as a pattern in environment (in the model of sensory input/reaction to output, seen through preference).