1) Manata mentions, but I would more heavily emphasize, that the common man's definition of "choose" is better represented by essentially the Least Common Denominator of dictionary definitions than by simply the first entry of the most popular dictionary. As such, the common man's definition does not have as a core aspect the "possible" element that is so key to the Libertarian (in the philosophical sense) argument.
Thus, for example, if one goes to Princeton's Wordnet and punches in "choose" one gets:
# S: (v) choose, take, select, pick out (pick out, select, or choose from a number of alternatives) "Take any one of these cards"; "Choose a good husband for your daughter"; "She selected a pair of shoes from among the dozen the salesgirl had shown her"Notice that none of these definitions included the word "possible" or an equivalent concept.
# S: (v) choose, prefer, opt (select as an alternative over another) "I always choose the fish over the meat courses in this restaurant"; "She opted for the job on the East coast"
# S: (v) choose (see fit or proper to act in a certain way; decide to act in a certain way) "She chose not to attend classes and now she failed the exam"
Likewise, Webster's New World Collegiate Dictionary provides:
transitive verb chose, chosen cho′·sen, choosing choos′·ingSame thing. "possible" is not part of the definition, although in one case the word "available" is there, which might arguably be an equivalent concept.
1. to pick out by preference from what is available; take as a choice; select to choose a book at the library
2. to decide or prefer: with an infinitive object to choose to remain
Etymology: ME chesen, cheosen < OE ceosan < IE base *ĝeus-, to taste, relish > L gustare, Goth kausjan
1. to make one's selection
2. to have the desire or wish; please do as you choose
One certainly can find dictionaries that include "possible" in the definition of choose (The first - and only the first - definition in the American Heritage dictionary, for example, has this feature: "To select from a number of possible alternatives; decide on and pick out" - I've added the emphasis), but such a feature that is not found in most dictionary definitions of a word can hardly be viewed as the actual "common man" meaning of the term. A better way to assess the "common man" meaning is to look for the commonalities and overlap of the many dictionary definitions.
2) What's up with the gratuitous reference to Michael Sudduth? :)