In this paper I claim that perceptual discriminatory skills rely on a suitable type of environment as an enabling condition for their exercise. This is because of the constitutive connection between environment and perceptual discriminatory skills, inasmuch as such connection is construed from an ecological approach. The exercise of a discriminatory skill yields knowledge of affordances of objects, properties, or events in the surrounding environment. This is practical knowledge in the first-person perspective. An organism learns to perceive an object by becoming sensitized to its affordances. I call this position ecological disjunctivism. A corollary of this position is that a case of perception and its corresponding case of hallucination—which is similar to the former only in some respects—are different in nature. I show then how the distinguishability problem is addressed by ecological disjunctivism.
Neste capítulo, apresento e sustento uma articulação da noção de habilidade corporal ou sensoriomotora a partir da psicologia ecológica e mostro como ela é relevante para o debate entre Dreyfus e McDowell sobre a lida habilidosa e também para o debate sobre se saber-fazer se reduz ou não a conhecimento proposicional. A metáfora correta para compreender habilidades corporais não é a do computador, mas a do rádio. Essas habilidades resultam de um processo de sintonização do organismo com o seu ambiente.
The extended mind thesis claims that at least some cognitive processes extend beyond the organism’s brain in that they are constituted by the organism’s actions on its surrounding environment. A more radical move would be to claim that social actions performed by the organism could at least constitute some of its mental processes. This can be called the socially extended mind thesis. Based on the notion of affordance as developed in the ecological psychology tradition, I defend the view that perception extends to the environment. Then I will expand the notion of affordance to encompass social affordances. Thus, perception can in some situations also be socially extended.
