Why be rational (or payday in Wonderland)?
This little fable illustrates three points. The first is that rationality is a property of patterns of choice rather than of individual choices. As Hume famously noted in 1738, ‘it is not contrary to reason to prefer the destruction of the whole world to the scratching of my finger; it is not contrary to reason for me to chuse [sic] my total ruin to prevent the least uneasiness of an Indian’. However, it seems irrational to choose chocolate when the menu comprises coffee, tea, and chocolate; and to choose tea when it comprises just tea and chocolate.