2010 (1984) - 18 mistakes

Factual error: In the scene where the crew members are doing a simultaneous countdown in Russian and in English, the Russian crewmember skips the number four (chetiri). She goes straight from 5 (pyat) to three (tree).

Other: After speaking with Dave Bowman on her TV, Betty lays her head on the table and we see an obvious cut & paste as her form shifts slightly.

Continuity: Toward the end of the chat in front of the white house, in a far shot, Dr Floyd crosses his legs. The camera comes in for a close-up and he crosses his legs again.

Continuity: All the monitors aboard Discovery-1 are standard CRT screens of 1980s vintage (curved face), yet in "2001", they were all flat screens. and there's been no upgrading between the events of the two films.

Continuity: In "2001", the platforms that the pods sit on have a rotating circular surface that is grated with square holes, looking much like a gigantic satin-black waffle. In "2010" these discs are solid and gloss black - no grating whatsoever.

Plot hole: In "2001", when Bowman leaves the Discovery's cockpit, he descends a ladder that leads to the pod control room (on the ship's starboard side, next to the centered pod bay). But when the ethereal Bowman leaves the cockpit with Floyd following, tho Bowman heads toward starboard, they enter the pod bay through the port-side corridor. This seems to ignore Bowman's knowledge of the Discovery's layout. With time being critical, had Bowman wanted to 'teleport' himself and Floyd to the pod bay, he'd have done so directly - no walking at all. Intentionally taking a meandering route to the pod bay seems to go against Bowman's reason for being here.

Plot hole: Dr. Chandra informs Dr. Floyd that HAL was "given full knowledge of the mission's true objective" and "was told to lie" to Bowman and Poole. Floyd protests, stating, "I didn't instruct anyone to tell HAL about the Monolith!", and when shown that the NSC gave the order, Floyd claims "I didn't know!" repeatedly, shocked. As Dr. Chandra never challenges Floyd on his defensiveness, he must believe Floyd, yet his investigation into HAL's orders surely would have come across the video message seen by Bowman after disabling HAL in "2001" wherein Floyd himself (played by another actor) states that HAL is the only one aboard that has been told the true purpose of the mission. Floyd must be lying and Chandra must know it, and with his deep affinity for HAL and desire to prove HAL innocent, he wouldn't let this lie go unchallenged.

Factual error: The filmmakers here forgot how a centrifuge works to mimic the effects of gravity. It is centripetal force wherein an object is pulled away from the center of rotation (you feel its effect on a merry-go-round when it spins really fast and you are tossed off by the centripetal forces). No gravity is actually created. So when the two astronauts are walking along the outside of Discovery and Curnow announces he is getting heavier, it is impossible. First, he's not within Discovery (and if he were, the force would pull him toward the ends of the ship - correctly depicted later when the men are shown walking on the inside of the pod bay doors). The area they are walking on is dropping away from their feet. Both men should be motionless in space as the ship falls away 'below' their feet, then rotates around and kills them when it clobbers their heads half a rotation later.

Continuity: In "2001", Bowman steals aboard Discovery through the emergency airlock. In the airlock's alcove is a spare spacesuit, green in color. He takes and uses the green helmet to cross the decompressed pod bay to access HAL's memory. After disabling HAL, Dave wore his red suit and helmet to leave Discovery for the last time, and would have had no reason to move the green suit before leaving, and no one else is aboard to have done so. In this film, we see the same alcove is entirely empty - the green suit has vanished.

Continuity: When doctors are discussing the medical condition of Dave Bowman's mother, a close-up of the African-American doctor shows a framed newspaper on the wall behind him. It is the front page and has prominent pictures of Bowman and Poole taken during their mission. In the next, wider shot, we see this wall suddenly has nothing on it - the newspaper and frame have vanished. They return when Bowman's mother sits up in bed.

Audio problem: During the countdown to separation, Tanya counts backward in Russian while a very non-Russian male voice counts down in English with no discernible accent. Prior to this, all ship-wide announcements are being read by the same voice, in English only. But all three American crewmembers are preparing for the separation - none of them are counting. The voice is also not HAL's. The ship is Russian-built as well, so it's not likely an automated voice.

Factual error: While the Leonov has a centrifugal section to simulate gravity, the ship's bridge is not part of it (evidenced by the stationary views outside its portholes). Yet in various scenes, including the one when Floyd rushes in to discuss his plan to return to Earth sooner with Tanya, gravity seems quite evident. Floyd marches across the compartment onto the raised pilot area's floor, then steps down from it, his foot landing audibly. Tanya's open jacket also hangs down normally as she moves about. Yet when Floyd demonstrates his plan using two pens, they float in mid air.

Revealing: When the Russian pod is launched, a wide shot shows the Monolith at top/right with Jupiter in the background and both the Leonov and Discovery at bottom/right with the pod nearby. Just before this shot ends, all three spacecraft vanish, leaving only Jupiter and the Monolith for a very short but obvious moment.

Factual error: In the vast majority of cases, U.S. Astronauts wear the US flag on their left arm. On the rare occasion the flag is on their right arm, the flag is reversed so that the blue field remains toward the front of the person wearing it. The patch on Dr. Chandra's space suit during the launch countdown to leave Jupiter is on his right sleeve but is a left-sleeve patch.

Continuity: Dr. Chandra is in the logic circuits room reactivating HAL. He types words into a computer on the wall opposite the logic circuit panel (panel with the clear plexiglass blocks). In the movie 2001 there was no computer screen there; when Bowman is deactivating HAL you can see the flat metal wall with the red grid on the wall opposite the logic circuits.

Deliberate "mistake": Dr. Chandra returns to the Leonov at the end of the film with the device that Dr. Floyd designed to cut HAL's memory circuits. He hands the device back to Dr. Floyd, who tosses it in the air and catches it when it falls back into his hand. One problem - there was no gravity on the ship at the time.

Continuity: During the "aero-braking" maneuver the force dislodges a photo from Dr. Floyd's wall and stretches his face indicating many Gs. Similarly, the cockpit crew is thrown back into their seats, yet their flimsy microphone headsets are never dislodged from their heads.

Continuity: At one point when Chadra is repairing HAL, HAL starts speaking gibberish. When HAL starts doing this there are 8 blocks sticking out from the floor, but when Chandra stops HAL there are only 4 left.