The idiom "out of sight, out of mind" means that when something is no longer in view, it is also no longer in one's thoughts. While this may be true in some cases, it is certainly not always the case. For example, people often think about loved ones who live far away, and people may also dwell on negative experiences that have occurred in the past. Additionally, some things, such as debts or obligations, may remain in mind even when they are not physically present. Therefore, the idiom "out of sight, out of mind" should not be taken literally.