Yarn Neat, 31, an assistant stock manager, said she had helped load the materials into the area using a freight elevator a week ago.

WSJ: 3 Die in Cambodia Factory Collapse

In New York's famous Macy's store, if you want a shoe in a particular size the retail assistant will look it up in a virtual stock room on a mobile device within seconds.

BBC: How 'point of sale' became much more than a fancy calculator

Juliette Kayyem, CNN contributor and former U.S. assistant secretary for homeland security, cautioned against putting too much stock in the early reports of Arab involvement.

CNN: Why officials, media wait to declare bombing suspect

And yes, a vast majority of the sudden surge in options bets are correct in predicting whether a stock will rise or fall, according to the study's co-author, Darren Hayunga, an assistant professor of finance at the University of Texas at Arlington.

WSJ: Insider Trading's Smart Cheats