You sometimes hear that taste has five dimensions (salty, sweet, bitter, sour, and umami). What does that really mean? Are these dimensions in the traditional sense?
When I think of dimensions, I think of how any possible “thing” can be described as a combination of the dimensions. For example, any point in a cartesian plane can be assigned X and Y, and any color can be described using a combination of red, green, and blue.
Does that mean any taste in the world can be described as a combination of these five dimensions? For example, can a mango, a Kit Kat, a tortilla, and milk all be uniquely described as a combination of salty, sweet, bitter, sour, and umami and nothing else?