Logan asks Kitty, Mike and Ben "what is Liberty? Is it the most choice? Is it the least obligation? Is it the least arbitrary system?"

There is perhaps no concept so central to humanity as freedom. Every choice is an inherently human exercise of the will.

The four Philosophers' discussion of what Liberty means ranges from Cherry Blossoms and John Denver to slavery and John Rawls' veil of ignorance. They decide that obligation and choice are interrelated, that the cost of a given action is a part of freedom, and that society today is generally far more free than society of yesteryear because of how much more choice the average American enjoys.

Additionally, Mike discovers that expectations of others are often obligations.