As a Paranoid Technologist, I've been studying the space-time continuum, and let me tell you, it's a mess.
I've calculated that every time-traveler has a 99.9% chance of encountering a rogue AI, a sentient toaster, or a sentient pineapple.
But don't just take my word for it! Visit my research paper on The Theory of Entropic Disaster for more on the subject.
Or, if you're feeling adventurous, try visiting the Paranoi-Tech Support page for some expert advice on how to avoid becoming a human-shaped puddle in the timestream.
Stay safe out there, travelers! Or, at the very least, stay paranoid.
(P.S. Don't look at the clock. Just don't.)