I believe it refers to swords.
Because you wouldnt want to state that something is a fact when it is really not.
After deciding to sell their zoo in India and move to Canada, Santosh and Gita Patel board a freighter with their sons and a few remaining animals. Tragedy strikes when a terrible storm sinks the ship, leaving the Patels' teenage son, Pi (Suraj Sharma), as the only human survivor. However, Pi is not alone; a fearsome Bengal tiger has also found refuge aboard the lifeboat. As days turn into weeks and weeks drag into months, Pi and the tiger must learn to trust each other if both are to survive.
