 A second set of objections concerns various ways in which a happy person might nonetheless seem intuitively to be leading an impoverished or stunted life. The most influential of these worries involves adaptation, where individuals facing oppressive circumstances scale back their expectations and find contentment in “small mercies,” as Sen put  it.[26]  Even a slave might come to internalize the values of his oppressors and be happy, and this strikes most as an unenviable life indeed. Related worries involve people with diminished capacities (blindness, Down Syndrome), or choosing to lead narrow and cramped or simpleminded lives (e.g., counting blades of grass). Worries about impoverished lives are a prime motivator of Aristotelian theories of well-being, which emphasize the full and proper exercise of our human capacities.