Bringing a raft of experience to 'Life of Pi'

As marine consultant on Ang Lee's film, shipwreck survivor and 'Adrift' author Steven Callahan gave the allegorical tale a real-world foundation.

NEW YORK — Ang Lee, the famously meticulous director of "Life of Pi," originally had planned to hire a survival consultant to infuse the allegorical tale of a boy's oceangoing raft journey with a tiger with a dose of realism.

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