For example, the civil services in Iraq have recently crossed a threshold beyond which they are now probably impossible to administer. A significant reason is believed to be the steady flight of intellectuals from Iraq, which seems obvious, but is difficult to measure.
这是因为情报人员需要现象、相关性和原因，而其中原因是最难理解的。譬如，伊拉克行政人员刚刚跨过一道门槛，如今很可能再也无法控制。据信一个重要的原因是知识分子一直在逃离伊拉克，这一事实似乎显而易见，但又很难予以度量。