First, preemptive and preventive uses of force are often justified by claiming either that there is substantial risk of a future attack or that it is difficult to ascertain how dangerous the target is.
Short-Term Memory: Up to 7 Items, But Highly Volatile. Many psychology experiments have shown that our short-term memory can hold only a limited number of separate items. The average is about 7 items, plus or minus 2, depending on the individual. You can easily confirm this by reading someone a series of words that have no connection with one another, then asking this person to repeat them.
Short term memory has three key aspects: 1  1. limited capacity (only about 7 items can be stored at a time) 2  2. limited duration (storage is very fragile and information can be lost with distraction or passage of time) 3  3. encoding (primarily acoustic, even translating visual information into sounds).