I'm confused about what people mean by 5,6,7, and 11 dimensions. Are they referring to spatial dimension? Are they referring to different dimensions like time is a "dimension" in addition to space? If we're talking about spatial dimensions, how can you have more than 3? Spatial dimensions are defined as all being orthogonal to each other. Once you get past three, you cannot be orthogonal to all dimensions. The axis is made with components of other dimensions.