It's also a way to make territory cards look as if they've been covered with the preaching work.
Just walk up to a house, put a tract on the door and don't have to come back, got to keep going and do all the 'doors'.
It's always about doing 'doors' and not talking to your neighbors about the Good News of Jesus Christ and his resurrection to the right hand of God.
It's always a "different good news" and "a different gospel": An invisible presence that motivates people to be sub-servient to a group of self apointed men in a Governing Body that claims to be God's only channel on Earth.
Tract campaigns, if you're a blind follower of the WTS you gotta love 'em.