And while applying an existing strategy allows you to select , it doesn't really satisfy a power to prefer or to desire . This power aspect of choice came when your strategy was invented or derived for the first time. Standing before the shop shelves, you merely applied your strategy to the selection and got the one option that fit best. Yet most folk would say they had chosen their soap powder then and there. And their clothes.
Most people simply act on a range of possibilities using their system of prioritised values.
Remembering and applying your particular decision strategy just ain't the same as inventing and deriving it. I wield my power for choice whenever I consider or re-consider my values, and devise my strategies anew. Another trivial example, this time of a re-working of a value system. Many people enjoy Michael Jackson's music. And concerts and whatnot.