Because I think we now have an abundance of evidence that this approach, tried and tested in numerous locations around the world, has not had the effect frequently claimed at the point at which such measures are instigated.
Prof. Ian Hargreaves
Because I think we now have an abundance of evidence that this approach, tried and tested in numerous locations around the world, has not had the effect frequently claimed at the point at which such measures are instigated.
See context to find out what was said next.