We are born into this world with a rudimentary sense of self that determines how we react to and with others. Through a process of trial and error, we refine our expectations of ourselves and our world to the point where we apply filters to limit the amount of information bombarding us through our senses.

These filters, in turn, dictate our behaviours. It is vital to know what your filters are, why you have them, and what benefits and costs your self-made rules for living deliver to you.

We also look at the histories of Thomas Kuhn, Galileo, John Harrison and some of the various Inquisitions (including the Spanish Inquisition so beloved of Monty Python fans) to discover what lessons we can learn from their experiences.