Abstract: A method and structure for selecting from a plurality of communication arrangements is performed by inputting a first party's ability to communicate with a second party. The invention evaluates the communication arrangement based on the first party's ability to communicate and repeats the evaluating process for a different communication arrangement if the first party's ability does not match a communication arrangement previously evaluated. The invention performs a cost-benefit analysis with respect to a communication arrangement matching the first party's ability and implements a communication arrangement when the first party's ability matches a communication arrangement. The cost-benefit shows whether the communication arrangement is justified.

Abstract: An improved transmission shift mechanism which incorporates both a combined synchronizing clutch and a positive engagement system for coupling and decoupling gear elements within a transmission frame. The synchronizing clutch mechanism has a plurality of circumferentially spaced latch members which are radially displaceable for frictional circumferential engagement with the inner walls of a gear member having a central bore opening. The positive engagement system is a locking unit which includes circumferentially spaced spherical elements which are also radially reciprocal for seating within corresponding recesses within the bore of the gears. The frictional engagement members and the positive locking ball elements are cooperatively actuated through contoured cam surface elements which are longitudinally displaceable within the sliding member responsive to manual operation of an extension rod in the longitudinal direction.