The two headline speakers at this year’s Jackson Hole symposium, Mario Draghi and Janet Yellen, both chose to focus on the dangers of complacency 10 years on from the global financial crisis.

The two central bank chiefs, speaking on August 25 at the gathering of policymakers in Wyoming, warned attempts to boost growth by cutting back on regulation would likely prove self-defeating.

Fed chair Janet Yellen said a resilient financial system was “critical to a dynamic global economy”. She conceded