They work for dirt cheap, and work hard because they want to keep the work they receive, an immigrants usual only hope is a steady work whether or not they're illegal.
Here Jack is influenced by what Burrhus Frederic Skinner an American
psychologist calls negative reinforcement. Negative reinforcement which is the
opposite of positive reinforcement and it means that the rate of behavior is increased
in order to avoid an unpleasant situation or unpleasant stimulus or negative
outcome.
Muslims invaded North Africa and occupied those territories and imposed jizya on the people. After a while the Non-Muslims were sick of being oppressed by the invaders and decided to become Muslims so that the burden of an extra tax would be removed.
