I think that this would be a great market. Bets would be based on predicting the month and year when economic indicators show that a recession has begun, and/or when building starts have declined past a certain level, there have been a certain number of foreclosures, housing prices have declined a certain amount, etc. The only question is how far in advance these predictions would be made. I would really like this period to go through May 2019. It could be by year, by quarter, etc.