Revealing mistake: Near the beginning, when the car is lowered into the underground complex, the car is sitting on a section of the street pavement above. When shown underground, it's sitting on a rug or carpet that appears as if it were supposed to represent a dirt surface. There are even visible tire tracks. (00:07:20)
Revealing mistake: During the miniaturization process after Phase I, the sub has been reduced to coin-size at best. As the techs are beginning Phase II, they roll wheeled equipment by the tiny sub. There is a close-up of the sub pilot looking eye-level with the equipment wheel axle, and a tech's ankle is slightly below the pilot's eye-level. This is an impossible perspective: for the pilot to be eye-level with the wheel axle, the sub would have to be more like a foot in diameter and not coin-size. (00:27:10)
Revealing mistake: It's painfully apparent that the actors are hung on wires pretending to swim while outside the sub.
Revealing mistake: Near the beginning of the movie, Grant is in the car being lowered but the shadow the car makes remains the same.
Answer: The miniaturized sub was injected into the man's carotid artery (neck) because it directly led to the brain and the blood clot. It was an unobstructed pathway taking the least amount of time for the sixty-minute mission. Exiting through the eye was done as an emergency escape route after the mission was sabotaged and the sub was destroyed. It was only easy to remove the crew once they exited the eye and were floating in the tears. Getting to and out the eye was difficult.
raywest ★