The split screens were added in the edit as an attempt to make the "talking heads" scenes more interesting.
The puppy which constantly escapes from its cage is appropriately called "Houdini" after the renowned escape artist.
In their mini biographies, birthdates are shown in the European format DD/MM/YYYY rather than the American MM/DD/YYYY. Also heights and weights are in metrics.
Visual Effects were done half in Bulgaria, and half in California.
The actor who portrays Dr. Greg Travis is named Marcus Aurelius. Marcus Aurelius was Roman emperor 161 to 180, and a Stoic philosopher.