It seems natural to choose whether to have a child by reflecting on what it would be like to actually have a child. I argue that this natural approach fails. If you choose to become a parent, and your choice is based on projections about what you think it would be like for you to have a child, your choice is not rational. If you choose to remain childless, and your choice is based upon projections about what you think it (...) would be like for you to have a child, your choice is not rational. This suggests we should reject our ordinary conception of how to make this life-changing decision, and raises general questions about how to rationally approach important life choices. (shrink)

We distinguish three qualitatively different types of uncertainty—ethical, option and state space uncertainty—that are distinct from state uncertainty, the empirical uncertainty that is typically measured by a probability function on states of the world. Ethical uncertainty arises if the agent cannot assign precise utilities to consequences. Option uncertainty arises when the agent does not know what precise consequence an act has at every state. Finally, state space uncertainty exists when the agent is unsure how to construct an exhaustive state space. (...) These types of uncertainty are characterised along three dimensions—nature, object and severity—and the relationship between them is examined. We conclude that these different forms of uncertainty cannot be reduced to empirical uncertainty about the state of the world without inducing an increase in its severity. (shrink)

In this paper I will analyse the relationship between metaphor and imagination. This issue has been recently studied by cognitive linguists who appreciate its importance, while other semantic perspectives neglect it. I will analyse the thesis which affirms that metaphors are based on cognitive components which are not logical-propositional but imaginative: the “image schemata” are recurrent models of corporeal experiences, centres of knowledge organization which structure – in a non-propositional form – an amount of salient information. This information emerges from (...) the sensorimotor activities such as: manipulation of objects, spatial orientation and focusing perceptive attention on different goals. According to this theory, imagination is the drive of the entire cognitive experience and, through metaphorical projection, it activates and coordinates the schemata from which the very linguistic activity originates. Starting with empirical studies about the cognitive and neurobiological plausibility of image schemata, I will assert the function of imagination as the trait d’union between experience and cognitive use of the metaphor, through the use of sensory and synesthetic metaphors as mediators among perceptive, physical and linguistic dimensions. I hope future research will concentrate on the relationship between synesthesia and image schemata because of their strong connection with human perceptive, cognitive and neural structures. (shrink)