so, each yoke/stick or whatever they use on the ATR can independantly (sic) control both sides of the elevator? 1 stick forward, and one aft, means one elevator moving up and the other side down? i have only ever seen such control movements in millitary (sic)aircraft, with the computer doing the work...
something doesnt make sence (sic)..
It does make sense.
Many, if not all, transport aircraft can separate control surfaces with sufficient force, as a design feature to deal with jammed controls/surfaces. Some (Dash 8 IIRC) can be reconnected in flight, some can't (Brasilia IIRC). It takes considerable force, so it doesn't (shouldn't) happen inadvertently.