When you're selling, buyers pick up on missing pieces even if they can't name them. Five core stories answer the questions running through their heads, and if any are absent, something feels wrong and the sale stalls.
If you only have to remember 5, each of those 5 stories is answering an unspoken question that your audience already has. So you already know your stories. Your audience has questions that those stories address. And when one of them is missing, people feel like something's off, but they can't exactly name what's off. But when all 5 are clear, then the trust builds faster. The time to sale is shorter.
