Sanwei Communications Receiver

The trimensic receiver is the large communications device through which Elijah Baley brings Commissioner Julius Enderby into a conference in Spacetown. Its role becomes consequential when Baley uses the connection not merely to speak with a colleague, but to present his theory of Dr. Sarton’s death before a witness he considers protected from the people he is accusing. The receiver makes distance politically useful: Enderby can participate without being physically present, and Baley treats that separation as a guarantee that the accusation will survive the meeting.

Appearance and operation

Baley asks permission to have Commissioner Enderby join the conference by trimensional personification. Dr. Fastolfe agrees and directs R. Daneel Olivaw to make the connection. The receiver is a large parallelepiped in a corner of the room; its shiny surface dissolves to reveal Enderby and part of his desk. The scene establishes the device as a visual link between two locations, not simply a voice connection: Enderby appears within the conference space, while the portion of his office visible through the receiver reminds Baley that the Commissioner remains elsewhere.

That mediation shapes how the people in the room respond. Baley has been sitting in stiff discomfort, but the sight of Enderby eases it. He feels affection for the familiar figure and longs to be back in the City, even in an unattractive part of its yeast-vat districts. The receiver therefore carries more than information for Baley: its image of a familiar colleague momentarily connects the sterile Spacetown conference with the City he wants to return to.

A witness brought into the room

Once Enderby appears, Baley wastes no time. He announces that he believes he has penetrated the mystery surrounding Dr. Sarton’s death. Enderby springs to his feet and reaches for his spectacles; standing carries his head beyond the receiver’s frame, forcing him to sit down again, red-faced and speechless. The device’s limits are made visible in the middle of a tense exchange: it can project Enderby into the conference, but only within the boundaries of its image.

The receiver also makes the participants’ different reactions legible. Enderby is visibly startled, and Fastolfe is startled more quietly, with his head inclined to one side; R. Daneel remains unmoved. Later, Enderby leans forward to inspect something outside the receiver’s range. Baley guesses that he is checking the power gauge to determine whether the transmitter is being tapped. The connection thus does not erase the separation between offices: the frame has an edge, and what Enderby can see or inspect remains partly outside it.

The receiver as a political safeguard

Baley uses the connection to make Enderby listen to the pattern he sees in the case. He recounts that Dr. Sarton’s reported murder coincided with Enderby’s arrival in Spacetown for an appointment with the murdered man; that the supposed human corpse had since been disposed of; and that the Spacer accusation against an Earthman depended on an improbable journey out of the City and across open country at night. He then links the supposed robot’s entry into the City, its threat to a crowd with a blaster, and the spread of a rumor that a killer robot was loose. The receiver gives Baley a way to deliver this connected argument directly to the Commissioner while Fastolfe and R. Daneel are also present.

Baley makes the device’s physical distance part of his argument about security. He says he is speaking in the presence of a witness who is not there in the flesh and whom the people under accusation cannot blast out of existence. He adds that Enderby is important enough to be believed by the City government and Washington, and warns that the governments could expose the situation to the Spacers. The receiver cannot prove Baley’s theory, but it enables him to put the accusation on record before a remote witness whom he presents as difficult to remove from the proceedings.

That protective interpretation is complicated by the equipment’s vulnerability to monitoring. When Enderby checks the power gauge, Baley reads the gesture as an attempt to discover whether the transmitter is being tapped. The conversation is therefore not conducted across a wholly secure or transparent channel: the participants must consider whether their exchange can be overheard. The receiver serves both as a means of bringing a witness into the discussion and as a reminder that communication itself may be subject to surveillance.

Identity, evidence, and the contested image

The receiver carries the argument into a dispute about what can be established through appearances. Baley accuses Fastolfe’s side of building a robot to resemble Dr. Sarton, destroying it, and showing its remains to Enderby. Fastolfe counters that if R. Daneel is truly R. Daneel, then the corpse Enderby saw must have been Dr. Sarton; he also invokes Enderby’s observation of R. Daneel under construction and the fact that, as he understands it, only one such robot existed. Baley replies that Enderby is not a robotics expert and could not rule out the existence of more than one.

The receiver is not itself evidence of which account is true. Instead, it places Enderby’s testimony within reach while the meanings of what he saw remain disputed: a body, a supposed robot, and a robot seen under construction all become parts of competing explanations. Fastolfe even asks Baley to consider whether R. Daneel might be K. Daneel, a possibility that, if accepted, would undermine Baley’s reasoning. The device’s image can make a distant witness present, but it cannot settle the difference between an observed appearance and the identity or history assigned to it. Its importance lies in the forum it creates: across a visible, bounded connection, Baley can confront the Commissioner, present his theory, and make the dispute over testimony and identity explicit.