1) Short films are typically under 40 minutes and focus on a simple idea or message in a concise way. They allow ideas to be expressed quickly.
2) The documentary "Lost" follows a man struggling with dementia as he believes his wife is missing, but the audience learns it is his memories that are lost.
3) The film uses poetic transitions between scenes and manipulated storytelling to reflect the experience of dementia and create confusion similar to the protagonist.