Uno, Dos, Tres, Cat-Four-Say
What is Dave wearing today? Dave's looking super casual in a blue T-shirt, khaki shorts, white tube socks, and a blue ball cap.
How does Dave feel today? Dave is over it.
What are the factors affecting Dave's mood? Dave is dealing with a nonstop series of requests, some of which are small, but all of which are relayed as life-and-death, mission-critical, invent-a-time-machine-so-you-can-do-this-yesterday items, even though they are not. Dave once worked in a building with a faulty fire alarm, which would go off repeatedly even when there obviously was no fire, requiring everyone to drop what they were doing and evacuate. The current situation is unlike the previous one. Disconnecting the fire alarm was not an option—sometimes the boy is crying wolf because there really is a wolf—but one begins to assume every whoop-whoop-whoop is a false alarm, which leaves one unprepared to respond when a five-alarm fire has broken out on the other side of the building.
Did Dave use the same indefinite impersonal third-person singular nominative pronoun twice in that last sentence? No, Dave did not. Dave would never be so grammatically gauche as to repeat the same indefinite impersonal third-person singular nominative pronoun in a single sentence. The second "one" is an indefinite impersonal third-person singular objective pronoun.