The final major problem with Cheit's evidence is the type of corroboration used. Confessions, while very convincing to courts, are not always as reliable as they seem. Multiple victim testimony can also be very dangerous. Even Cheit admits that this type of evidence can be unreliable. Many people have been wrongly imprisoned because of a prior record that somehow implicates them or makes them a good fit.
Circumstantial evidence is just that.
It can be powerful and very suggestive but there is also a risk to make sweeping claims from it. There was no physical evidence in any of the cases. They presented a case study of a WWII tailgunner who recovered the memory of a plane crash during therapy. After this plane crash, he also lost the use of his arm although the diagnosis was that the paralysis was not organic. Following the therapy, the tailgunner also began to regain use of his paralyzed arm.