In his home Scrooge carries out a census of the senses, taking inventory rather than dealing with his encounter with the Ghost. Yet even in the midst of this mundane task, the face of Marley is projected on the tiles that adorn Scrooge's floor. Supernatural attempts to arrest Scrooge's attention include bells ringing frantically and the sound of chains. This saving judgement of the senses intends to wake Scrooge up from his insensitivity with the only faculty he gives authority to - his direct perception. Even the flames in his hearth leap up, a screeching witness to the reality of Marley.
Scrooge sees neither the poor nor their squalid conditions.
Moreover, he fails to notice the spiritual values symbolized by the church bell chattering above his head. The description of the London fog points to the narrow vision of Scrooge's urban pragmatism. Dickens depicts a myopia of the senses through having Scrooge be so near-sighted. He is a spiritual Mr. Magoo of the cartoons. The Ghost of Christmas Present imputes spiritual significance to physical reality.