Near the end it has this gem: "...Yale Law School professor emeritus Peter Schuck, the author of Agent Orange on Trial: Mass Toxic Disasters in the Courts. While they can empower the so-called little guy to go after corporate wrongdoers, mass torts are vulnerable to exploitation and manipulation, he argues. Even when everything’s on the up-and-up, they’re “an extremely inefficient way of compensating victims,” Schuck told me. They take a long time to litigate, have high transaction costs (up to 40 percent of the total outlay, according to Schuck), and can lead to unpredictable rewards."
So given the law professor calls class actions (mass torts) inefficient with high transaction costs, what is the opinion "Class actions are cheap and efficient..." based on?