you can walk away with the understanding, if you didn't already know it, that the cad/usd exchange is pegged to the inflation-adjusted price of oil in usd, but that steep spikes in either direction in the price of oil tend to get blunted by the exchange rate. a 70% crash in the price of oil might only be a 20% crash in the cad, while smaller fluctuations are matched in the exchange rate more closely. you'd consequently need both a steep and a sustained hike in oil (adjusted for inflation) to actually get the cad up.

i apologize if my lack of precision in previous posts created confusion, but the people nitpicking me are dubious sources of information with ideology issues that you shouldn't take seriously.