This paper is dedicated to articulating the ethical puzzles that arise from the possibility of time travel. I divide the puzzles into three different categories: permissibility puzzles, obligation puzzles, and conflicts between past and future selves. In each category, I suggest that ethical problems involving time travel are not as dissimilar to parallel “normal” ethical puzzles as one might think.

There is an ongoing debate about the “ontology” of consent. Some argue that it is a mental act, some that it is a “hybrid” of a mental act plus behaviour that signifies that act; others argue that consent is a performative, akin to promising or commanding. Here it is argued that all these views are mistaken—though some more so than others. We begin with the question whether a normatively efficacious act of consent can be completed in the mind alone. Standard (...) objections to this “mentalist” account of consent can be rebutted. Here we identify a much deeper problem for mentalism. Normatively transformative acts of consent change others’ reasons for acting in a distinctive—“robust”—way. Robust reason-changing involves acts aimed at fulfilling a distinctive kind of reflexive and recognition-directed intention. Such acts cannot be coherently performed in the mind alone. Consent is not a mental act, but nor is it the signification of such an act. Acts of consent cannot be “completed” in the mind, and it is a mistake to view consent behaviour as making known a completed act of consent. The robust reason-changing account of consent developed here shares something with the performative theory, but is not saddled with a label whose home is philosophy of language. Certain kinds of performative utterance may change reasons robustly, but not all robust reason-changing involves or requires acts of speech, and consent can be effected by a wide range of behavioural acts. (shrink)

A longstanding debate regarding the nature of consent has marked a tri-fold division among philosophical and legal theorists according to whether they take consent to be a type of mental state, a form of behaviour, or some hybrid of the two. Theorists on all sides acknowledge that ordinary language cannot serve as a guide to resolving this ontological question, given the polysemy of the word “consent” in ordinary language. Similar observations have been noted about the function of consent in the (...) law and use of the word “consent” in legal contexts. This paper makes a parallel argument regarding consent’s characteristic normative role: roughly, to transform moral prohibitions into permissions. This role is neither unique nor essential to any one particular kind of thing, be it a mental state, form of behaviour, or hybrid of the two—rather, it is played by mental states and behaviour in independent and context-sensitive ways. The upshot is that insofar as we are interested in its normative implications, we ought to adopt a pluralistic approach to consent which gives independent weight to the moral contributions of facts about mental states and facts about behaviour relative to a context. (shrink)

In this paper, I answer the following question: suppose that two individuals, C and D, have been in a long-term committed relationship, and D now has dementia, while C is competent; if D agrees to have sex with C, is it permissible for C to have sex with D? Ultimately, I defend the view that, under certain conditions, D can give valid consent to sex with C, rendering sex between them permissible. Specifically, I argue there is compelling reason to endorse (...) the following thesis: -/- Prior Consent Thesis: D, when competent, can give valid prior consent to sex with her competent partner (C) that will take place after she has dementia, assuming that D is the same person as she was when she gave prior consent, meaning that, if D, when competent, gave prior consent to sex with C, then C may permissibly have sex with D. In section I, I explain both the background and the existing literature on this issue. In section II, I outline relevant stipulations about the kinds of cases I will be examining. In section III, I defend the Prior Consent Thesis. And, in section IV, I address objections to the Prior Consent Thesis. (shrink)

I analyse the tension between a plausible liberal view of sex work and the similarly plausible idea that rape and other forms of sexual violence are made morally worse by their sexual nature. I find no conclusive reason to drop the liberal view of sex work, at least as long as the concept of voluntary and informed consent at the core of it is robust enough to account for the realities of prostitution around the world; nor should we abandon the (...) idea that rape is no ordinary immoral act: reducing sexual violence to non-sexual violence would misrepresent the relevant phenomena and perpetuate injustice. (shrink)

This paper aims to provide an in-depth examination of the fundamental elements of rape, specifically focusing on intention and consent, within the context of “deceiving someone into having sex”. The analysis will involve exploring model cases and scrutinising the intentions of both the deceiver and the deceived in relation to consent. Through conceptual analysis, the concept of “deceiving someone into having sex” will be clarified, drawing insights from typical applications of this concept. Additionally, this paper will critically evaluate the main (...) arguments against these conceptualisations of “deceiving someone into having sex”. This is done to demonstrate the flaws that undermine these arguments, thus highlighting the insufficiency of these approaches in fully discrediting the concept. Moreover, it will be argued that deceiving someone into having sex can be regarded as a form of coercion, and thus rape, aligning with the established criteria for identifying rape cases. In conclusion, this paper argues that the conception of “deceiving someone into having sex” as a form of rape challenges the narrow framework through which we traditionally understand rape, necessitating the recognition that the scope of the concept of rape extends beyond our previous limits. (shrink)