Any time now, government economists will decide whether America Online's (AOL's) $165-billion proposed take-over of Time Warner is likely to be good or bad for consumers. If good, the government will sign off. If bad, there'll be negotiations with AOL and Time Warner until an agreement can be reached on what the new company would have to do to answer economic objections. The inquiry will be quiet and businesslike, occurring in colorless offices and occasionally in meeting rooms filled not only with economists but also with government lawyers and the counsel and investment bankers representing AOL and Time Warner.