>consult guide about time travel
The Guide checks through its Sub-Etha-Net database and eventually comes up
with the following entry:
Sorry, that portion of our Sub-Etha database was accidentally deleted last
night during a wild office party. The lost data will be restored as soon as
we find someone who knows where the back-up tapes are kept, if indeed any
are kept at all.
-- The Hitch Hiker's Guide to the Galaxy