On broader lines he's like those chappies who sit peering sadly over the marble battlements at the Pennsylvania Station in the place marked "Inquiries." You know the Johnnies I mean. You go up to them and say: "When's the next train for Melonsquashville, Tennessee?" and they reply, without stopping to think, "Two-forty-three, track ten, change at San Francisco." And they're right every time. Well, Jeeves gives you just the same impression of omniscience.
The quote likens the character Jeeves to those knowledgeable individuals at train stations who effortlessly provide accurate information. They patiently listen to inquiries and respond with confidence and precision, like knowing exactly when the next train departs for a distant location. This comparison highlights Jeeves’s remarkable intelligence and ability to serve information reliably, much like the helpful attendants who assist travelers navigating the complexities of train schedules.
Jeeves is portrayed as a figure of wisdom, exuding a sense of calm assurance in his extensive knowledge. His omniscience mirrors the expertise of those station attendants, always ready with the right answer, making him a dependable companion. This illustrates the trust the narrator places in Jeeves, who embodies an unwavering certainty that is both comforting and impressive, much like the people who operate behind the scenes at busy transit hubs.