It's 3am, do you need help with your cat? No, you don't. But do you need help understanding the intricacies of paradoxical time travel? Oh yes, that's a different story.
According to the Chrono-Logician's Manual, the laws of time are as follows:
But don't just take our word for it! Visit our Paradox Lab and see the time-space continuum in action! Or, you know, just close this tab, it's not that important.