Aristotle also talked about why touch can be considered the most reasonable of feelings: after all, it most contributes to the preservation of a living being, protects him from death. The book popularly talks about skin as an organ of perception; the significance of touch, how its mechanisms work; about experiments in the psychology of tactile perception, about tactile forms of activity and self-expression. Why doesn't watching a hammer hit someone else's finger make us pull our hand away, and when someone is nearby? it itches, we also experience itching? How does the texture of the items we touch affect our decisions and actions? Can skin sensations subconsciously affect our impressions of people and situations?..