At, around 11:00, you can see, Delilah Marian pulling out he laptop's power cable so it would shut down in a forced state, but if you rewind to 10:57, and freeze-frame, you can see the laptop's battery charge at the top right is nearly full, hence in which the laptop would've never turned off because it had plenty of battery life.
According to the episode, the ghost of Andrew can move through wireless signals and haunt anything that is connected to them. The term "WiFi" is used generally throughout the episode. Although it's convenient for the show's rules and lore, it's not accurate. WiFi isn't a signal that floats around anywhere for any device to connect (that's what a cellular network is, and even that isn't open to just any device, and it comes from cell towers which are way more few and far between than the access points shown) as portrayed by the episode. WiFi connects devices that can access the Internet wirelessly to a wired Internet network, that's all. It would have been made more sense (according to the show's lore) if, in addition to the power line, a phone or cable TV line hit the car as well. As far as keeping Delilah safe goes, Dean wouldn't have to bring her to the basement, in fact, it's unlikely that she wouldn't get a WiFi signal down there (although cellular network signals would be fuzzy at best). Simply going to the network room and cutting the building's coaxial or Ethernet feed would've cut Internet access for the entire building and kept Andrew out.
Additionally, the wireless speakers would be connected to Bluetooth from the stereo or two independent analog channels, not WiFi or cellular. They couldn't even connect to the Internet.
Additionally, the wireless speakers would be connected to Bluetooth from the stereo or two independent analog channels, not WiFi or cellular. They couldn't even connect to the Internet.
"Theta" is a Greek letter that sounds like the English "th" and its symbol looks like an "O" with a horizontal line through it. "Tau" is the Greek letter equivalent of the English "T."
Around the 22 minute mark, the song "Take me to church" is playing. The scene takes place months before the song was released.
Delilah tells Janet that she can't believe their Art History final is 'tomorrow', leading the audience to believe school is about to let out for summer. After Janet's death, the detective informs Sam and Dean that everyone had left for Spring Break. Some universities still use trimester systems, or three terms per year, one of which traditionally ends in the Spring.
In the opening sequence, when Janet and Billy are in the truck, Billy asks the navigation app on his cell phone to find "Taco Town." Janet says, "I don't think this is the way to Taco Town." Billy responds with, "What do you know? Your phone is 3G." The network speed of her service (or the network limitation of her phone) is unrelated to GPS. Janet's phone would find the same Taco Town; the step-by-step directions might simply be delayed due to slower bandwidth.