FHE is just a math equation. Can you accept the requirement that you process the state more than once? If so you could do something like encode the atomic state

FHE is just a math equation. Can you accept the requirement that you process the state more than once? If so you could do something like encode the atomic state of a silicon circuit somehow and step it forward in time. That is probably what the researcher is referring to. You can encapsulate computation, but not in a single math equation.