Your staffers may try to dazzle you by producing voluminous white papers, complex analyses, etc. So what? These days, anyone can find huge amounts of data on the Internet on any topic. And it’s a big waste of your time to dig through it to find something you can use.
What you need is highly distilled, critical information. So if your people really want to impress you, they should bring you only what’s necessary. The best way to train them to do that is to simply reject their massive reports. Say, “Bring this back to me when you’ve got it refined down to a single page.”