This retrospective, or backward-looking, use is closely connected with praise and blame, punishment, and desert. When something has gone wrong, we invariably want to know who was at fault; and when something has gone right, we occasionally stop to ask who acted well. This is the topic of retrospective responsibility.
RACA [ISBE] RACA - ra'-ka, ra-ka'> (rhaka, Westcott and Hort, The New Testament in Greek with Codices Sinaiticus (corrected), Vaticanus, Codex E, etc.; rhacha, Tischendorf with Codices Sinaiticus (original hand) and Bezae; Aramaic reqa', from req, empty): Vain or worthless fellow; a term of contempt used by the Jews in the time of Christ.
The purpose of the Regional Activity Center (RAC) is to provide just that. The Regional Activity Center is a high intensity, high density multi-use area designed as appropriate for growth by the local government or jurisdiction. RACs are intended to encourage attractive and functional mixed living, working, shopping, education, and recreational activities, in areas of regional importance.