Got me. But I like to think that using precise technical terms such as "idempotent" is perfectly fine. "Immutable", works as well, since you have "mutable", an

Got me. But I like to think that using precise technical terms such as "idempotent" is perfectly fine. "Immutable", works as well, since you have "mutable", and "mutation" to go with it. Both also carry a lot of contextual information that make them hard to replace. (There has to be a proper linguistic term to describe these properties) "Touch base" is none of those things. Ever.