First Stop - S4-E14
Visible crew/equipment: After driving all day, the Ricardos and Mertzes stop by a run-down diner then end up spending the night in their shared cabin. While they're all in their beds, the vibration of the nearby train causes the Ricardos' bed to shakily slide towards the Mertzes and then back again. The wires attached to the Ricardo's bed are visible, coming from the hole at the bottom of the left wall, and the leg at the foot of the bed is set in a track attached to the floor, which keeps the bed on course.
Lucy Thinks Ricky is Trying to Murder Her - S1-E1
Visible crew/equipment: When Ricky walks over to the table while he is on the phone with Jerry, a camera is briefly visible on the right hand side of the screen. (00:08:15)
Sentimental Anniversary - S3-E15
Visible crew/equipment: When Lucy puts all the golf clubs in the bag and takes a practice swing, three tape marks are visible on the carpet near Lucy's feet and the golf bag.
Lucy Does a TV Commercial - S1-E30
Visible crew/equipment: In the scene where Lucy supposedly stumbles on a few minutes before hand because she is drunk from the Vitameatavegamin, you can see a sliver from her living room in the backstage area.
Hollywood Anniversary - S4-E24
Visible crew/equipment: After Lucy rushes out with the newspaper to tell Ethel about all the movie stars coming to the party, when Lucy returns to the suite and closes the door, we can see the arm of a crew member and a board with "DPI" (Desilu Productions Inc) on it, at the bottom right side of the screen, and a bit of equipment at the top right corner. (00:15:00)
The Ricardos Are Interviewed - S5-E7
Visible crew/equipment: When Ricky's new agent stops by the apartment to talk to him, Fred and Ethel are standing in front of the desk, and there's a T-mark on the floor in front of Ethel's feet. (00:04:50)
Homecoming - S5-E6
Visible crew/equipment: During the episode a small tape mark is visible on the floor between the coffee table and the couch, and a T-mark can be seen on the floor near the desk, such as when Lucy starts telling her guests about their "fabulous" trip, Ethel stands at the T-mark and a female guest stands at the tape mark. (00:07:05)
Visible crew/equipment: When Ethel walks into her hotel room and tells Lucy and Fred about having to push the motorcycle to three different places, the second camera (or other equipment) keeps moving in and out of shot at the right side of the screen. (00:13:00)
California, Here We Come! - S4-E13
Visible crew/equipment: When "Mickey" takes his mother-in-law's suitcases to the back, just as Lucy and her mother sit down on the couch, we can see the bright shadow of something moving across the piano behind them. (00:06:50)
Visible crew/equipment: When Lucy and Mrs. Littlefield bring out the soup and then salad, at the start of the shots just as they leave the kitchen, the shadow of another camera can be seen on the edge of the set's "wall" at the right side of the screen. (00:20:25)
Visible crew/equipment: After Lucy phones Ricky and fibs about a man being on the fire escape, when Ethel and Fred rush in looking for Lucy, two actors' tape marks are visible on the floor where Fred and Ethel stand, beside the couch. (00:06:20)
Visible crew/equipment: While Ethel and Lucy are trying to frighten Mr. Beecher so he'll leave the apartment, when Lucy blows up the balloon the reflections of all the overhead set lights are visible on the balloon. (00:23:00)
Visible crew/equipment: During the scenes in the living room after wig-wearing Lucy comes home in a huff about Ricky, an actor's mark is visible on the carpet at the fireplace, and there's a T-mark on the carpet between the couch and desk.
Visible crew/equipment: When Lucy and Bert (Roberta) walk into the back of the salon, there are a few chalk marks on the floor to the right of the styling chair, and a few moments later that's where both Doug and Bert stand when Doug doesn't recognizes Lucy at first. (00:03:40)
Visible crew/equipment: When Lucy tells Ricky, Fred, and Ethel that she made a carbon copy of the novel they just burned in the fireplace, the actors' tape marks are visible on the carpet when Lucy says, "Pardon me," in the wideshot. Then later, when Ricky, Fred, and Ethel walk in while Lucy's typing up her sequel, they stand at tape marks again. (00:11:05)
Visible crew/equipment: While Lucy starts taking notes about Ethel, Fred walks in and soon asks, "What's going on this booby hatch," then just as Lucy rushes back to the desk, we can see the end of the set wall and there's some kind of partition in front of the kitchen set. (00:02:35)
Ricky's Hawaiian Vacation - S3-E21
Visible crew/equipment: When Lucy rushes into Fred and Ethel's apartment to tell them that Freddie Fillmore had called, the actors' tape marks are visible on the floor. (00:12:40)
Fan Magazine Interview - S3-E16
Visible crew/equipment: When Lucy tells Ethel of her suspicions about Ricky she grabs Minnie Finch's card out of Ethel's hand, and just as Lucy stands up the camera tilts upward, and we can see part of the top of the set where set lighting is located. (00:19:35)
Visible crew/equipment: During the living room scenes throughout the episode, various tape marks are visible on the carpet near the couch and desk, where different actors stand.
Visible crew/equipment: When Lucy, Ethel, Ricky, and Fred are in the living room having coffee, the actors' tape marks are visible on the carpet around the coffee table.
Answer: There is no reason. It's a just a silly plot device, typical of the era. Women characters were often portrayed as making uninformed assumptions or decisions.
raywest ★