In his paper he recommended that the Fed commit to keeping policy easy until the economy reaches a particular target, such as nominal GDP (ie, output unadjusted for inflation) returning to its pre-recession path.
To start with probably the least important aspect of all this, I am surprised by how little emotion has been sparked by Mr Carney's remarks, that there might be a case for replacing narrow inflation as a target with nominal GDP target, or the cash value of annual economic output.