What is important is the ability to make the best possible decision when presented with the available information. That comes from intelligence, wisdom, experience and base moral principle. The next thing that is hugely important is the ability to communicate those decisions and put them into action. Action after all is what it takes to make things actually happen.
A walking encyclopedia represents none of the above. Just because someone can recall endless details regarding endless policies in of itself does little towards actual problem solving. It certainly doesn’t hurt but it does not provide a useful measuring stick of problem solving ability.
The simple truth is there is far too much to “know” these days. We simply can’t know it all. That’s where trusted advisors and experts come in. And even then one must have good judgement on whether what your advisors are saying makes sense or not and whether or not to seek additional information.
So what is important to me at this point is what kind of team she puts together and then how she campaigns - if she does so.
A president will always need advisers, and it is true that you can’t know all the dynamics of every region of the world.
None the less, there are important regions where it is very important to have a fairly good grasp of what has taken place over the last 25 to 60 years.
The Middle-East, Europe, and now Asia are important regions. It’s very important that a president have a rudimentary grasp of those regions. Even the reading of five to ten books would go a long way toward bringing someone up to speed, with each additional volume broadening the scope of understanding.
A president should know enough to prevent certain gaffs, that would reveal an extremely juvenile grasp of their counterpart’s nation and it’s neighbors.
It is also important to know if a candidate has been able to deal productively in their former positions and with their staff.