There is an important contemporary debate in moral responsibility about whether the following asymmetry thesis is true: moral responsibility for actions does not require alternative possibilities but moral responsibility for omissions does. In this paper, we do two things. First, we consider and reject a recent argument against the asymmetry thesis, contending that the argument fails because it rests on a false view about the metaphysics of omissions. Second, we develop and defend a new argument against the asymmetry thesis, one (...) that avoids the problem with the first argument by not resting on any assumptions about what omissions are metaphysically. (shrink)

The W-defense is among the most prominent arguments for the principle of alternative possibilities (PAP). Here I offer some considerations in support of the W-defense and respond to what I see as the most forceful objections to it to date. My response to these objections invokes the well-known flicker of freedom response to Frankfurt cases. I argue that the W-defense and the flicker response are mutually reinforcing and together yield a compelling defense of PAP.

Una crítica a los contraejemplos tipo-Frankfurt, presentada por David Widerker y conocida como la "Defensa-W", ha persistido a través de los años como uno de los retos más difíciles que estos han de enfrentar. En este texto defiendo los contraejemplos tipo-Frankfurt de este ataque de Widerker presentando un dilema en el que su premisa fundamental, el Principio de expectativas alternativas, se ve envuelta: o bien la plausibilidad de este principio depende de la máxima kantiana "deber" implica "poder", lo cual haría (...) que el principio mismo, y con él todo el argumento de Widerker, sea redundante y prescindible; o bien no se basa en esta máxima, pero entonces no hay ninguna razón de fuerza por la cual se pudiera defender que este principio debe ser aceptado como válido. A critique presented by David Widerker on Frankfurt-counterexamples and known as the "W-defense" has persisted for years and has been considered one of the most difficult challenges these counterexamples have to face. This paper aims to defend Frankfurt counterexamples against Widerker's attack. For doing this, the paper presents a dilemma addressed to the main premise of Widerker's attack: The Principle of Alternative Expectations. The dilemma states: either this principle rests on the Kant's maxim, "ought" implies "can", and then this makes redundant and unnecessary the principle and Widerker's whole argument; or the principle does not rest on such maxim and then there is no good reason to accept it as valid. (shrink)