The author suggests that in order for people to fully understand the exploit, additional information should be provided. Specifically, they highlight the situation where two different parties can spend the same HTLC txout without the first party having the right to spend it based on their knowledge of the HTLC-preimage.

The author emphasizes the importance of explaining how this scenario is possible and recommends providing a comprehensive explanation to ensure clarity on the matter. It is implied that the current level of understanding may be insufficient and that a more detailed explanation is necessary to grasp the exploit fully. However, the specific details of the exploit or any potential solutions are not mentioned in the given context.

It is worth noting that the email does not provide any links or external references related to the topic being discussed.