# Prof. Joel Hasbrouck on the case against accused "flash crash" trader Navinder Singh Sarao

1 Faculty News April 22, 2015 ![Marketplace Logo](/sites/default/files/styles/246w/public/assets/images/marketplace_logo.jpg?itok=IIav3Udj)>

Excerpt from [Marketplace](http://www.marketplace.org/topics/life/mid-day-update/podcast-spark-behind-flash-crash) -- "They're always difficult cases to make, because, as with the Dodd-Frank law, it's going to turn on intent - putting out a better offer that you don't intend to execute - and in any legal situation, intent is difficult to establish."

[Listen here](http://www.marketplace.org/topics/life/mid-day-update/podcast-spark-behind-flash-crash)