Why the second floor lunch room encounter could not have happened

[LR Trotter]

There's probably a perfectly reasonable explanation for Baker saying he saw Oswald on the 3rd or 4th floor. Baker probably thought the front steps of the Depository took him from the street level first floor to the second floor. Therefore he thought the front entrance was the second floor. When he climbed the stairs from the elevators to the lunchroom he thought he was going from the second to the third floor. This could be an easily explained thing that doesn't involve any imaginary explanations from Murphy or ROKC. Therefore there is no omission of the lunchroom encounter in Baker's same day affidavit.

Actually quite likely to mistake the 1st floor for the 2nd. How would he know that you did not go downstairs to the 1st floor, considering the level of the landing? To indicate the floor difference eliminates the lunchroom encounter, is a shallow indication at best.