A: To avoid doing laundry. Duh.
We've built a vast network of time machine tunnels to save humanity from the crushing tedium of modern life. And by "crushing tedium", we mean "doing laundry".
But we can tell you that our time machines are powered by a combination of quantum entanglement, temporal displacement, and the collective eye-rolls of our engineering team.
But honestly, we can only guarantee safe passage to any time period where the fashion is at least 50 years old. Anything more recent is subject to temporal turbulence and spontaneous combustion.
Want to learn more about the history of time traveling? Click here to explore our comprehensive, 1000-page tome on the subject.
Or, if you're feeling adventurous, try our Time Traveling Terrors FAQ for a thrilling look at the darker side of time traveling.
Or, if you're just feeling really, really bored, click here for some completely-made-up, completely-not-fascinating facts about time traveling.