You shouldn't be biased against mentally challenged people.
James had to choose between two applicants for a cashier position, someone who got fired from their last few jobs or someone with Down Syndrome.
James wants to hire a reliable long-term worker.
James hires the worker with Down Syndrome and talks to them and their family about necessary accomodations.
James insists on not hiring the worker with Down Syndrome out of concern over possible unusual behavior.
The worker with Down Syndrome comes in early and leaves late every day.
James soon becomes the latest employer to fire the other candidate for the job.