It’s relevant because it demonstrates that in differentiable functions, if it is the case that changing only w1 does not affect the loss, and changing only w2 does not affect the loss, then it is not possible that changing them both can affect the loss either.
It’s relevant because it demonstrates that in differentiable functions, if it is the case that changing only w1 does not affect the loss, and changing only w2 does not affect the loss, then it is not possible that changing them both can affect the loss either.