Sometimes things are just out of your control.
Order shipment lost.
Economy crashed.
Email never sent out.
The list goes on.
Perhaps you could have prevented it but sometimes there isn't anything you can do except cope with the consequences.
There are problems, which have a solution. Even seemingly impossible solutions count.
There are situations, which have no solution. Only coping.
It can be hard work to figure out which of the two is this big hairy beast that's staring you down today. Even harder work to admit there is no solution.
Don't waste time trying to fix situations.
Eric Davis
Is one flavor better at keeping customers?
Compare how your variants perform to find the ones that keep customers buying over and over again.