After an incident investigation we gather the facts, assign causes and compile a set of lessons that should, if learned well, prevent a similar incident from occurring. Unfortunately, too often we see the same type of incident happening, sometimes in the same company that had the original incident, although not necessarily in the same facility, or in a company using the same process technology as the company that had the incident. What happened? We do not learn by listening to a talk or reading a bulletin, at least not for the long term. Our memory fades with time. Even if not, we still need to relate the incident findings to the planning and execution of our work. Thus, the way to remember those lessons is by making them vivid when training, incorporating them in our technology and daily operations, and periodically reinforcing them.If we manage to do that, there is a good chance that the lessons will be woven into the fabric of the company and incidents will not be repeated.