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Hello I'm Andrew Popp. City. banks. Kevin Rogers, author of a new book on the rise of technology in banking, tells us why automation is making the financial sector more unstable.

The destabilizing force of technology that caused such problems in my opinion leading up to

97 98 and 2007 2008 can't be stopped and after last week stress test results in

Europe do they tell us anything useful? Our finance correspondent gives us his view.

What we should really be worried about is the detrimental long-term effects of these low

interest rates staying low for a very long time and net interest margins remaining very narrow.

First though we explore how the world of high stakes finance went from this

to this.

Kevin Rogers has been a banker for over 20 years, most of it spent at Deutsche Bank.

While there he witnessed the rapid rise of automation in foreign exchange markets as super fast computers

gradually made traditional middlemen obsolete.

In a new book, Why Aren't They Shouting, a banker's tale of change, computers and perpetual crisis?

He looks back on that transformation through the lens of the 2008 financial crash.

Kevin, thanks for coming in.

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