We don't see a direct correlation,

We are seeing advances everyday and deaths are decreasing. It is a direct correlation.

I believe there is a direct correlation between love and laughter.

Most of you will have heard the maxim "correlation does not imply causation." Just because two variables have a statistical relationship with each other does not mean that one is responsible for the other. For instance, ice cream sales and forest fires are correlated because both occur more often in the summer heat. But there is no causation; you don't light a patch of the Montana brush on fire when you buy a pint of Haagan-Dazs.

One of the first things taught in introductory statistics textbooks is that correlation is not causation. It is also one of the first things forgotten.

The Fresh Direct model doesn't work.