The film's opening is the pleasureable kind of confusion; we're immersed in scrappy, restless invention. Aaron (Shane Carruth, also the writer and director) and Abe (David Sullivan) are engineers tinkering around in a garage, hoping to come up with the next big invention. Through circumstances I am gladly ill-equipped to explain, they invent a device -- a box -- that can propel them back in time. Not months or years, mind you, but just a few hours or however long you want to spend inside: The effect is not instantaneous transport but rather moving backward three or four hours as the world moves forward.
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