Mental Technology for Living in an Age of LossModern society constantly exists alongside unexpected loss. There are people who lose loved ones in major disasters or personal tragedies, tormented by intense guilt and loneliness, asking "Why did I alone survive?" This unbearable inner turmoil sometimes becomes a psychological limiter, stagnating the rest of their lives. However, in recent years, a new perspective for overcoming this mental anguish has been presented from an interdisciplinary field called projection science. The insights from this field suggest a remarkable possibility: the treatment of mentality for those who have experienced loss—finding a path to live tomorrow through the illusion created by the brain, the projection of the deceased.Ghost Experiences After the Disaster That Reveal Mental ProjectionIn areas affected by the Great East Japan Earthquake, many people have spoken of "seeing" or "hearing the voices" of deceased family members and friends. Shuji Okuno's book "Tamashii demo ii kara soba ni ite" (Soul, Stay With Me Even As a Spirit) carefully interviews survivors about their spiritual experiences, suggesting that these are not mere superstition but earnest mental workings to overcome the pain of loss. Additionally, Kiyoshi Kanabishi's "Yobioakosareru Reisei no Shinsaigaku" (Disaster Studies of Awakened Spirituality) examines how such ghost experiences played roles in reconstructing community bonds. From the perspective of projection science, these studies can be understood as extremely personal yet social mental processes where the brain reconstructs reality through projection of one's inner self.When someone who has lost a loved one strongly wishes "I want you near me, even as a soul," this is not merely hope but becomes a trigger for the brain to remake itself. This can be interpreted not as a mere defense mechanism to escape the pain of loss, but as an active mental working to repair a broken heart and live for tomorrow. Ghost experiences narrated in disaster areas can be reframed not only as mysterious phenomena that science cannot fully explain, but as mental therapy the brain orchestrates, essential for living.Reconstruction of Language and Perception, and Mental RegenerationOne important element that projection science elucidates is the influence language has on perception. Through words, we not only express our inner selves but possess the power to greatly change impressions on others and their psychological responses. Research in experimental psychology has shown that repeatedly listening to specific language stimuli—for example, sentences narrating memories with the deceased—changes subsequent visual processing, such as brain responses when viewing photos of the deceased. This suggests that language directly intervenes in the brain's visual processing.The act of a bereaved person repeatedly having conversations with the deceased in their mind can be understood as actively engaging in this process. This act doesn't remain mere reminiscence. By putting memories of the deceased into words and speaking to them, the brain not only reactivates past memories and emotions but creates an interactive experience of dialogue with the deceased within the brain. This language stimulus may affect perceptions like vision and hearing, potentially triggering experiences of "seeing the deceased's figure" or "hearing their voice." This shares aspects with the phenomenon where the brain integrates multiple sensory information and perceives something non-existent as reality, as demonstrated by the famous "rubber hand illusion" in experimental psychology. In the rubber hand illusion, by stroking the subject's hand and a rubber hand simultaneously, the subject eventually comes to perceive the rubber hand as "their own hand." This is a phenomenon where the brain integrates visual and tactile information, recognizing even a non-existent hand as part of one's own body. Applying this principle, survivors reconstructing their connection with the deceased in their brains and experiencing that presence can be considered to operate through similar mechanisms. By dialoguing with the deceased, survivors "project" their own emotions and thoughts onto the deceased, receiving answers from the depths of their own hearts in the form of responses from the deceased.Social Projection and Mental ResolutionIn the field of social psychology, projection is measured as data. A bias called the "false consensus effect" shows the tendency to think "others probably share my preferences and opinions," revealing that many people unconsciously apply their own emotions and beliefs to others. This phenomenon is also utilized in marketing, with survey results showing that advertising campaigns using emotionally appealing language expressions and images improved purchase intent by an average of over 12%.Applying this knowledge to mental health, people who have experienced loss can be interpreted as projecting their own strong feelings of "wanting to live" and wishes to "be happy" as the deceased's thoughts of "wanting them to live." The experience of the deceased speaking to them saying "this is okay" is a self-healing narrative the brain weaves for survivors to forgive themselves, to say "it's okay that I'm alive."Excessive projection can cause one to shift responsibility for their own issues onto others, carrying risks of generating unfounded criticism and exclusionary emotions. However, for people facing the suffering of loss, this "projection of the dead" created by the brain is different from those risks. It is an indispensable process for heartfelt empathy with lost love and for coming to terms with one's own guilt. Projection science will become the key to unlocking how we understand unconscious mental workings and how skillfully and powerfully we reconstruct reality to overcome the sorrow of loss.ReferencesShuji Okuno, "Tamashii demo ii kara soba ni ite" (Soul, Stay With Me Even As a Spirit), Opening post-3/11 ghost experiencesTohoku Gakuin University Earthquake Record Project, Kiyoshi Kanabishi Seminar, "Yobioakosareru Reisei no Shinsaigaku" (Disaster Studies of Awakened Spirituality)The world deepens through projection, viewed from cognitive science perspectiveProjection, Definition, Theories, & Facts, BritannicaIs social projection based on simulation or theory? Why newThe Influence of Language on Perception: Listening to SentencesAction-projection in Japanese conversation: topic particles wa, moProjection as a Defense Mechanism: Understanding the Psychology