There are two ways to deal with the uncertainties arising from the Covid-19 pandemic. The first is to take them as they come, and as I wrote in an earlier column, deal with the daily developments with a Stoic mind. To play the stroke according to the ball that comes your way. The second way is to try to get a sense of how things are likely to pan out, and prepare for them in advance to the extent possible. To have a game plan, but still be Stoic about it because things might not go the way you want. Most people can choose either way. But those who have to make personal, business or policy decisions that involve a longer horizon need some way to look beyond the here and the now. In other words, we need information that helps us estimate what might happen in the future. And this is where the problem lies.