Revealing mistake: When Bob and Joyce have lunch, Bob pops open a can of soda (which is period appropriate). The scene cuts to Joyce, then back to Bob. It is clear from how he is holding the can, and how he pretends to drink from it, that his newly opened soda is actually empty.
Stranger Things (2016)
1 revealing mistake in season 2
Starring: Winona Ryder, David Harbour, Millie Bobby Brown, Finn Wolfhard, Dacre Montgomery
Chapter Two: The Weirdo on Maple Street - S1-E2
Factual error: When Chief Hopper and his fellow patrolman are standing over the lake, Hopper has a radio on his belt. The radio is a modern Motorola walkie talkie and at least a decade newer than it should be.
Multiple characters: Mouth breather.
Chapter Two: The Mall Rats - S3-E2
Trivia: The song Scott Clarke is listening to is not 'My Sharona, ' but actually 'My Bologna, ' by Weird Al Yankovic.
Chapter One: The Hellfire Club - S4-E1
Question: At the beginning of the episode we see all the children in Hawkins' lab die because of Eleven. But what happened to her? Just what did she do that made her kill all of those people?
Answer: You see what happened in one of the later episodes in the season ("Chapter Seven: The Massacre at Hawkins Lab").
Answer: This is answered in a later episode so you should watch the entire season, but if you really want to know...SPOILERS She didn't, 1 (Vecna) killed all those children.
BaconIsMyBFF