Differently than an advanced obligation to take delivery the alternatively released reward request requires the promoter to spend money each year: an advanced obligation to take delivery requires the expenditure only in the years, in which a suitable vaccine is developed and used. The reason for this difference is that the alternatively released reward request assumes that innovations arrive in such a way with sufficient frequency that, on any given time, many are suitable for a reward of them common and. Such an acceptance seems, since the reward system can cover use up-requiring medicines, rather as plausible, restrictivy only on vaccines. Finally the alternatively released reward request is not finally incompatible, with advanced obligations to take delivery: both systems could function, probably with the condition at the same time that individual product would not be suitable for inclusion in both. Since the alternatively released reward request is relatively new, it has, to confront serious exact investigation of a broad public. When such remains it an interesting idea, which can earn further analysis and view. Finally the optionally Reward proposal is emergency, after all, incompatible with Advanced Purchase Commitments: both system could operate simultaneously, presumably with the condition that A single product would emergency fuel element eligible for inclusion in both. Since the optionally Reward proposal is relatively recent, it has yet ton face serious scrutiny from A wide audience. As look for, it remains on interesting idea that May deserve analysis and consideration.