I think there is an experiential way to fix Lefties, at least those few with an open mind.
In the fourth lesson, the Lefty has been walking around London all day and arrives at a private park. There are private parks for the British gentry in London, with nannies and children born to aristocracy, running around the park...carefree. Outside the parks are the limos driven by immigrants and members of the lower class.
Our Lefty can't get in the park to sit on a bench. He wasn't born to the right parents.
There are classes in many countries where the appropriate family for generations have had priviledge. You don't belong.
Point out to the Lefty that such inherited classes are long gone in the U.S.