On Chalmers’ principle of organizational invariance and his ‘dancing qualia’and ‘fading qualia’thought experiments

David Chalmers has proposed several principles in his attack on the ‘hard problem’ of consciousness. One of these is the principle of organizational invariance (stipulating that two systems with the same functional organization will have qualitatively identical experiences), which he asserts is significantly supported by two thought experiments involving human brains and their functional silicon-based isomorphs. I claim that while the principle is an intelligible hypothesis and could possibly be true, his thought experiments fail to provide support for it.