Homomorphic encryption is pretty amazing. What they're proposing in this article is a bit like having a computer analyze an encrypted novel and determining which sentences were grammatically incorrect--without even knowing what the plaintext sentences were!
This article opened my eyes to many things, such as how many cookies can be stored on your computer from not going to many websites, how easy it is to track ones location, and how Facebook could easily recognize you in real life. It discussed ways that information is gathered and stored about someone online that I hadn't even thought of before and was very eye-opening.
Even when college students use computer or electronic devices that belong to the school, any websites they visit, links they download, and videos they watch can offer behavioral information and data that is directly tied to that student's profile, and thus them too. It's important to be aware of this fact, and realize that whatever privacy you think that Mac in the back of the library offers you is in reality nonexistent. That Mac is uploading your data to the Cloud every minute you use it, and it's important to track and understand that your online information is being sent, without your consent, to other entities. So, be careful with what you search up next time.