Briefing a person and briefing an agent are the same act. Most people were never taught to do either, and the second one shows up in minutes.
TL;DR: Mid-market companies now put more investment into AI than into anything else, and most organizations credit it with under 5% of EBIT. What sits between the spend and the result is an ordinary management skill: stating the outcome, supplying the context, defining what done looks like. Only one in three workers has received any employer-provided AI training in the past six months. The existing training covers prompting and stops where the work gets useful. Nobody in your company has read anybody else’s prompt, so nothing compounds. Ask three people for the prompt each used on one task.
