A rudder helps stabilize and turn a boat or an aircraft.
If your boat didn't have a rudder it would yaw (swing from side to side) and you wouldn't be able to steer it left and right.
If it were an airplane, you would probably lose control and crash (though multi engine planes and jets might be able to get by in an emergency by varying the thrust of the various engines)
nothing
You would die
we would die
you would blow up
what would happen if the 8th amendment didn't exist
?
you die
we have freedom
plants will die
Death.
Nothing would happen. You either believe in them or you don't!
There will die