This thesis is about the moral reasons we have to do less than best. It consists of six chapters. Part I of the thesis proposes, extends, and defends reasons to do less than best. In Chapter One (“The Conditional Obligation”) I outline and reject two recent arguments from Joe Horton and Theron Pummer for the claim that we have a conditional obligation to bring about the most good. In Chapter Two (“Agglomeration and Agent-Relative Costs”) I argue that agent-relative costs can (...) justify permissions to less than best in a far greater range of decisions contexts than we currently believe. In Chapter Three (“Risk and Aggregation”) I discuss how anti-aggregative moral theories deal with risk, whilst proposing an argument in favour of ex-post moral theories. -/- In Part II of the thesis, I discuss longtermism, presenting a series of reasons to believe we have both significant permissions and obligations to prioritise those in the short-term. In Chapter Four (“Listening to Future People”) I criticise a recent argument presented by Andreas Mogensen for the claim we cannot have obligations grounded in the wellbeing of future people. I then show that, even permitting the existence of obligations to future people, we still have significant reasons to resist longtermism on the grounds of partiality. In Chapter Five (“The Complaints of Future People”) I argue that scepticism about aggregation is inconsistent with an obligation, or indeed even a permission, to help far future people. In Chapter Six (“Leaving the Present Behind”) I explore the moral significance of “dooming”, whilst arguing that we have a pro tanto reason of fairness to prioritise aiding those currently in existence. (shrink)

Tom Dougherty (2013) argues that the following moral principles are inconsistent: (α) it is impermissible to benefit many people slightly rather than save someone’s life, and (β) it is permissible to risk someone’s life slightly to benefit them slightly. This inconsistency has highly counterintuitive consequences for non-consequentialist moral theories. However, Dougherty’s argument, the “Repetition Argument,” relies on a premise that ignores a morally important distinction between acting with statistical knowledge and acting with individualized knowledge. According to this premise, if it (...) is permissible to make it near certain that a distribution obtains, then it is permissible to bring about that distribution. I will argue that this premise proves too much for the Repetition Argument, and so we should reject it. Finally, to further motivate my own objection, I show that a recent objection to the Repetition Argument by James R. Kirkpatrick (2018) does not resolve the inconsistency. (shrink)