The Solution: For an idea to be patentable, it should be specific on the problem it solves. Its not enough for an invention to say, save time on delivery. It should save precisely xyz time by say, a specific routing of delivery people or using an algorithm of delivery vendors v/s products available. Additionally it should be applicable in the market for economic gain or business viability. This also means that it could be sold or leased because it solves a problem for you and others (you could license it, for profits).