Continuity mistake: Strange is at home, looking for help on a video chat. His friend says no, and in his rage he sweeps almost everything off the table including the Microsoft Surface laptop. Christine enters with food, we cut back, and the area of the table to his left, which was totally clear a second ago, now has several pieces of paper on it and the laptop with a closed lid. A few moments and cuts later, the laptop is in perfect condition on the table with lid open.

Doctor Strange (2016)
Ending / spoiler
Directed by: Scott Derrickson
Starring: Benedict Cumberbatch, Rachel McAdams, Tilda Swinton, Chiwetel Ejiofor, Mads Mikkelsen
Kaecilius and the zealots have killed the sorcerers at the Hong Kong sanctum and destroyed its beacon; with the beacons at London and New York already broken, Earth has no protection against the Dark Dimension, leaving Dormammu free to invade.
Strange and Mordo arrive and witness the destruction before Strange uses the Eye of Agamotto to rewind time. The pair resurrect Wong, but Kaecilius halts the spell right before the beacon is rebuilt, freezing the group in time.
As Kaecilius describes the Dark Dimension as a reality beyond time, Strange enters and traps himself and Dormammu a time loop; Strange is repeatedly killed, but time resets to the moment Strange arrives. As time does not exist in the Dark Dimension, Dormammu has no control over it. His will is eventually broken and lets Stephen name his terms for the end of the time loop; to leave Earth alone, never return, and to take Kaecilius and the zealots with him.
Time begins to flow in Hong Kong as the rogue sorcerers are dragged into the Dark Dimension. Though the day has been saved, Mordo is appalled by Strange using the reality-bending time magic and abandons the sorcerers. Strange and Wong return to Kamar-Taj, where it is revealed the Eye of Agamotto's time controlling nature is due to the fact it contains an Infinity Stone. Strange is appointed master of the New York sanctum as he accepts his role in the mystic arts.
In a scene set during the credits, Thor visits Strange and asks for his help in finding Odin; this hints at the events in Thor: Ragnarok. In a scene set after the credits, Mordo tracks down Pangborn and absorbs his magic, reverting Pangborn to a quadriplegic state.
Dr. Stephen Strange: This doesn't make any sense.
The Ancient One: Not everything does. Not everything has to.
Trivia: The envelope opened by Strange has the same year of birth as the release of Doctor Strange Vol. 2 #1 in 1974.
Question: When Strange is surgically removing the bullet from the patient's brain, why did he ask the one doctor to cover his wristwatch?
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Answer: I took it to mean Dr. Strange could hear the watch ticking, and he wanted complete silence.
Bishop73