Suppose a feature space with dimension p is given. What are the expected advantages and disadvantage of adding another related feature (dimension becomes p+1) to the feature space? What are the...

Suppose a feature space with dimension p is given. What are the expected advantages and disadvantage of adding another related feature (dimension becomes p+1) to the feature space? What are the expected advantages and disadvantage of removing a feature from the given feature space (dimension becomes p-1)? Hint: think about the importance of the features first and the other factors that they affect.