Despite the withering political onslaught of the past few days the Finance Minister Grant Robertson has whistled a happy tune and delivered a steadfastly optimistic Budget.

There was optimism in his fiscal projections. A confidence in the current economic growth path that is not shared by most economists.

There was optimism in his reinvention of the Budget documents to include wellbeing measures. And in his belief that these will be economically transformational.

So the Government will spend more, deliver lower surpluses and trust in Treasury's cheery economic forecasts at the upper end of the current consensus of economist opinions.

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