>This is simply because the person's characteristics are not described, and a person is more complex to visualize than a simple shape like a ball. does this me

>This is simply because the person's characteristics are not described, and a person is more complex to visualize than a simple shape like a ball. does this mean that when asked to visualize something you exert conscious effort to do the visualization, choosing to not focus on the visualization of the complex person and focusing on the simple ball.