The Computer History Museum in Mountain View has never been mentioned in a list of California’s Most Haunted Locations. Its exhibits may celebrate ghosts of computers past and the remnants of now-defunct websites, but the museum has remained resolutely apparition-free…but thanks to The Tessera, that’s about to change. Because starting January 17th, the Computer History Museum in Mountain View, California is launching an educational alternate reality game designed to teach computational thinking through a host of spectral guides.


Last December, I received a cryptic introduction to The Tessera from computational pioneer Ada Lovelace. In addition to a letter warning of the return of “S” and a punch card, the envelope contained dossiers detailing two other deceased computing pioneers, Steve Jobs and Charles Babbage. The reverse side of Ada’s note featured one of her more famous quotes:

They say that coming events cast their shadows before. May they not sometimes cast their lights before?

Pairing Ada’s quote with the punch card lead to the final destination, featuring a preview of the full Tessera experience.


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