That's correct, and the designer is too close to the product too.
That is the correct message, and the one every article about design should push. Neither the engineers nor the designers can design a product in a vacuum.
Those are both old books that do not deny this message, but focus on less relevant subjects, and have less than clear advice. We shouldn't recommend those books for people without previous knowledge on UX design, because they will be harmful.
Besides, given that Nielsen was himself a very important voice on the creation of the modern user-focused design, there is very likely a newer book from him to recommend instead (I stopped reading his books and started reading his papers at the time of the change, so I don't know one).
That is the correct message, and the one every article about design should push. Neither the engineers nor the designers can design a product in a vacuum.
Those are both old books that do not deny this message, but focus on less relevant subjects, and have less than clear advice. We shouldn't recommend those books for people without previous knowledge on UX design, because they will be harmful.
Besides, given that Nielsen was himself a very important voice on the creation of the modern user-focused design, there is very likely a newer book from him to recommend instead (I stopped reading his books and started reading his papers at the time of the change, so I don't know one).