File data may reflect times when everything was running well,
for example the first-time-this-year three-minute- die-change,
or the once-since-the-plant-opened week
when no expediting was necessary.
Your ability to envision a future state depends upon personally going to where the action is and understanding and timing what is happening.
(Possible exceptions to this rule are data on machine uptime,
scrap/rework rates, and changeover times