Unique concept but its not new, sometimes people do this with their friends and families. Future betting is definitely a concept in gambling that haven’t been seen that much in gambling platforms, finally this platform made it formal and more organised compare to what we traditionally do.
It's quite new as it tackles a broad event and different topics, unlike in traditional predictions that only applies in sports or politics or in bitcoins or market price, this includes too many topics or anything that can bet with with certain timeline prediction. Some topic where just question that is answerable by simple yes or no but still hard to determined. Will try to bet sometime on predictions that can happen faster to see how the service and reability of the site will be.