 Trust can make cooperation possible, rather than simply easier, if trust is essential to promising. Daniel Friedrich and Nicholas Southwood defend what they call the “Trust View” of promissory obligation (2011), according to which “making a promise involves inviting another individual to trust one to do something” (2011: 277). If this view is correct, then cooperation through promising is impossible without trust. Cooperation of this sort will also not be fruitful unless the trust is justified.