Factual error: In a bleak snowy cityscape that depicts New York City in the late 1970's, there is a small satellite dish attached to a rooftop. It is the kind that DirectTV and the Dish network employ today, but probably not at the time period in question.
Factual error: When Gogol's grandfather receives the picture of baby Gogol, the envelope has $0.37 stamps that were not issued until 2003. But Gogol was born in the 1970s as evidenced by the inscription in the book his father gave him for graduating high school, dated 1995. (00:25:50 - 01:51:30)