Time travel

So you want to be a time traveler!


If you're an aspiring time traveler, you need to pick up a copy of the brand-new how-to book So You Created a Wormhole: The Time Traveler's Guide to Time Travel (Berkley Trade, 326pp., $15). If you are already a time traveler, you should probably pick up a copy, read it, then go back in time till before you time-traveled in the first place, and use your new knowledge wisely.

Wait, does that make any sense? Time travel is some intense and tricky stuff. I got ahold of authors and time-travel experts Phil Hornshaw and Nick Hurwitch for further intel on the matter.

SFBG The book contains several film references (Back to the Future, Bill and Ted's Excellent Adventure, The Terminator, etc). In your opinion, which film offers the most accurate depiction of time travel? Which is the least accurate?

Phil Hornshaw Back to the Future is a pretty reliable resource for the perils of time travel, even if it does take a few liberties in the service of being awesome. Granted, you can’t go into the future and find yourself there — how could you be there in the future if you left from the past? — but the ideas of timelines being corrupted and for the most part, of needing antecedents in the past in order to create the future, is handled pretty deftly in Back to the Future.

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UPDATED: Is time travel possible? A Potrero Hill sign warns of the possibility.


Something strange popped up on an unassuming tree near the Guardian offices in Poterero Hill earlier this week. Walk up Mississippi Street, in between Mariposa and 18th Streets, and you will find a white sheet of paper taped to a trunk with neon green electrical tape. The sign warns bystanders of an attempt at time travel.

The picture is pasted here. I've also taken the liberty of typing it out for you.Read more »