Indifferentworkingconditions, fast, slowwalk, onlyonepersoncan be in the aircontinuouslycompleteupper and lower, forward and backward, turningall the action.
Fastforward twenty years, and to walk the streets of any city in the U.S. is to see Americans of all income classes listening to music, texting, searching internet sites, and watching television on small rectangular objects that also serve as the once much coveted wireless phone.