"I wish I knew what it was, " he says, seductively, of the reasons for his enduring appeal.
For Mr Cassidy, the deeper roots of the crisis lie in the enduring appeal of an idea: that society is always best served when individuals are left to pursue their self-interest in free markets.
The surprising findings may help to explain the enduring appeal of 'bad boys'.
It is not difficult to find the reasons for their enduring appeal.