Much of the information people have forms part of their identity. In fact, your entire identity consists of information. For many of us, part of our identity is fake, because from early childhood many of us concluded that in order to be accepted we had to be certain ways. Of course, the people around us are partially fakes. The result of this phenomenon is that much of the information that is near and dear to peoples' hearts is fake.
Fake information is also fragile, easily threatened.
When our refund requester read Fritz's book, it threatened much of his fragile, fake information. But that was contrary to his fragile, fake information. A seminar or workshop is a place where people eat oranges. To feel accepted you have to eat the orange. There's an instructor who provides the oranges and helps people eat them.