 The above recipe, if feasible, is a trivial consequence of the expressive power of real numbers. Yet it is discussed in the literature as an example of perhaps possible physical computation beyond the power of TMs (e.g., Copeland 2000)—something that would falsify Physical CTT. There is no reason to believe such a recipe can be implemented, because it requires either the measurement or the preparation of a Turing-uncomputable real-valued quantities with unbounded precision. There is no evidence that either is doable.