With the abandonment of the illiterate "Budget surplus at all costs", Jeremy Corbyn and John McDonnell are vindicated.
Wholly discredited are their enemies in and around the Parliamentary Labour Party, the last people who still adhere to the abandoned economic policy of the sacked George Osborne.
Meanwhile, the Government now has no economic policy whatever.
The Opposition, however, has one in great detail. The advantage of having been right all along.