There's no doubt your assertion, "...Not only do we have unemployed labour resources, but we have considerable unemployed capital resources that need to come on stream...." is correct. But .......

While GDP growth is high, it is a bit of a mirage and the Finance Minister should be more cautious when he crows about our 'strong' economy. Much of this GDP rise is via expansion of oil+gas activity and rising real estate in Toronto/Vancouver.  To be sure there is slack in the economy but more to the point there are real risks that the Liberals are minimizing. We all know what they are.  

I was ready to buy into Trudeau's '$10 billion stimulative infrastructure' plan but that's not what has happened.  We have doubled that deficit merely for program spending. This is not stimulative, it implies structural deficits. The day will come when we will really need deficit spending to keep programs alive. Trudeau's team is being imprudent with the piggy bank.