注释
(1) “重要性并不亚于传统的有形建筑材料”：Avinash Rajagopal, “Three Forms of Invisible Architecture,” Metropolis, November 2014.
(2) “然后唱起一系列的歌来”：Ioannis Marathakis, “From the Ring of Gyges to the Black Cat Bone: A Historical Survey of the Invisibility Spells,” Hermetics Resource Site, 2007, www.hermetics.org/Invisibilitas.html.
(3) “一件衬衣、一把剑、一面镜子和一颗动物的心脏”：Wendy Doniger, “Invisibility and Sexual Violence in Indo-European Mythology,”出自“Invisibility: The Power of an Idea,” ed. Arien Mack, special issue, Social Research: An International Quarterly 83, no. 4 (2016年冬), 848.
(1) “印证了他们之前的想法”：出自本书作者与David Anderegg的交谈，March 2, 2016.
(2) “让孩子的想象力肆意驰骋”：Ronda Kaysen, “Secret Spaces,” New York Times, October 16, 2016.
(3) “我们需要进入精神世界中的私密空间，对自己的思想进行审视”：Alison Carper, “The Importance of Hide-and-Seek,” Couch, New York Times, June 30, 2015, https://opinionator.blogs.nytimes.com /2015/06/30/the-importance-of-hide-and-seek/.
(4) “未来能否与他人建立亲密关系”：出自Alison Carper给本书作者的邮件，July 7, 2015.
(5) “失望、悲伤和愤怒情绪”：Tracy Gleason, “Dr. Tracy Gleason on Imaginary Friends,” Glimpse Journal Blog, September 8, 2010, glimpsejournal.wordpress.com/2010/09/08/dr-tracy-gleason-on-imaginary-friends/.
(6) “又该如何应对？”：出自Tracy Gleason与本书作者的谈话，March 31, 2017.
(7) “既可以是实体，也可以是幻想中的形象”：出自Tracy Gleason与本书作者的谈话，March 31, 2017.
(8) “一个可以练习社交技能，或是安全地体验情绪剧烈起伏的平台”：Tracy Gleason, “Murray: The Stuffed Bunny,” Evocative Objects: Things We Think With, ed. Sherry Turkle (Cambridge, MA: MIT Press, 2007), 170-176.
(9) “凭着自己的灵魂去和想象中的他人赤诚相见”：Marjorie Taylor and Candice M. Mottweiler, “Imaginary Companions: Pretending They Are Real but Knowing They Are Not,” American Journal of Play 1, no. 1 (summer 2008), 47, 50.
(1) “像上帝……一样常存善心”：Jean-Jacques Rousseau, The Reveries of the Solitary Walker, trans. Charles E. Butterworth (Indianapolis: Hackett Publishing Company, 1992), 81-82.
(2) “单一频率的光波无法携带大量信息”：David R. Smith, “Invisibility: The Power of an Idea,” 36th Social Research Conference, New School, New York City, session one, Research and Discovery, April 20, 2017.
(3) “但距离做出哈利·波特的‘隐形斗篷’还有很长一段路要走”：出自David R. Smith给本书作者的邮件，August 18, 2017.
(4) “当我们不想看到某件东西，却又想让另一样东西留存于我们的视野之中时”：出自John Howell与本书作者在罗彻斯特大学的谈话，July 27, 2015.
(5) “并没有想象的那么难”：Arvid Guterstam, Zakaryah Abdulkarim, H. Henrik Ehrsson, “Illusory Ownership of an Invisible Body Reduces Autonomic and Subjective Social Anxiety Responses,” https://www.nature.com/articles/srep09831/.
(6) “存在不可逾越的鸿沟”：Philip Ball, Invisible: The Dangerous Allure of the Unseen, (Chicago: University of Chicago Press, 2015), 281.
(1) “每只动物身上都映射着它所处的环境”：Kevin A. Murphy, “Not Theories but Revelations”: The Art and Science of Abbott Handerson Thayer (Williamstown, MA: Williams College Museum of Art, 2016).
(2) “都需要在必要时刻将自己保护起来”：Kevin A. Murphy, “Not Theories but Revelations”.
(3) “尽量缩小到不会被察觉的幅度”：Hugh B. Cott, Adaptive Coloration in Animals (London: Methuen ＆ Co Ltd., 1940).
(4) “看起来反倒显得愚蠢又不合时宜”：Helen Macdonald, “Hiding from Animals,” New York Times Magazine, July 19, 2015, 16.
(5) “在与更大的真相碰撞之时的消亡”：Katherine Larson, Radial Symmetry (New Haven, CT: Yale University Press, 2011), 12.
(6) “这片树林里一处小小的细节”：Wendell Berry, “An Entrance to the Woods,” in The Art of the Personal Essay, comp. Phillip Lopate (New York: Anchor Books, 1995), 673-677.
(1) “触感比语言或情感接触的作用要强上10倍”：Diane Ackerman, A Natural History of the Senses (New York: Vintage Books, 1990), 77.
(2) “因为存在方式的改变而出现认知上的颠覆”：Robert Macfarlane, Landmarks (New York: Penguin Books, 2015), 104.
(3) “或明或暗的陆路与水路”：Italo Calvino, Invisible Cities (New York: Harcourt, 1978), 88-89.
(4) “上方游动的捕食者”：Kenneth Chang, “A World of Creatures That Hide in the Open,” New York Times, August 19, 2014, https://www.nytimes.com/2014/08/19/science/a-world-of-creatures-that-hide-in-the-open.html.
(5) “有望凭此技术使‘隐形潜艇’成为可能”：Molly Cummings, “Invisibility: The Power of an Idea,” 36th Social Research Conference, New School, New York City, session one, Research and Discovery, April 20, 2017.
(6) “面对压力时的被动性反应”：Wallace J. Nichols, Blue Mind (New York: Little, Brown, 2014), 109.
(7) “借助非智力、潜意识与认知性的方式”：Elizabeth R. Straughan, “Touched by Water: The Body in Scuba Diving,” Emotion, Space and Society 5, no. 1 (February 2012), 19-26.
(8) “特定环境能激发相应的情绪体验”：Deborah P. Dixon and Elizabeth R. Straughan, “Geographies of Touch/Touched by Geography,” Geography Compass 4, no. 5 (May 2010), 449-459.
(1) “一字不落地回忆完过往的整段人生”：Mary Ruefle, “On Erasure” (lecture, Vermont College of Fine Arts, Montpelier, VT, January 2009).
(2) “更多地指向‘有形’”：Mary Ruefle, in conversation with the author, May 25, 2016, Lake Paran, VT.
(3) “遗忘过如此多的短语”：Jonathan Safran Foer, “Jonathan Safran Foer’s Book as Art Object,” interview by Steven Heller, ArtsBeat (blog), New York Times, November 24, 2010, https://artsbeat.blogs.nytimes.com/2010/11/24/jonathan-safran-foers-book-as-art-object/.
(1) “反映出文化态度与行为”：出自在贝宁根学院听取的双重性别主题会议纪要，September 4, 2014.
(2) “带有不止一个种族的血缘关系”：Bonnie Tsui, “Choose Your Own Identity,” New York Times Magazine, December 14, 2015, https://www.nytimes.com/2015/12/14/magazine/choose-your-own-identity.html.
(3) “皮尤研究中心社会趋势研究主任”：Richard Pérez-Peña, “Report Says Census Undercounts Mixed Race,” New York Times, June 11, 2015, https://www.nytimes.com/2015/06/12/us/pew-survey-mixed-race-multiracial-america.html.
(4) “这具被截肢的身体”：Katy Diamond Hamer, “Ed Atkins, Performance Capture: The Kitchen,” Eyes towards the Dove, April 27, 2016, http://eyes-towards-the-dove.com/2016/04/ed-atkins-performance-capture-kitchen/.
(1) “工业化运输系统兴起”：Anthony Raynsford, “Swarm of the Metropolis: Passenger Circulation at Grand Central Terminal and the ideology of the Crowd Aesthetic,” Journal of Architectural Education 50, no. 1 (September 1996), 11.
(2) “因与大家保持步调一致而感到舒适”：Alexandra Horowitz, On Looking: Eleven Walks with Expert Eyes (New York: Scribner, 2013), 146.
(3) “每个人内心深处都有一种依靠他人的热望”：出自Michael Lockwood与本书作者的通话，May 23, 2016.
(4) “这就是人们愿意互相帮助的原因”：出自Michael Lockwood与本书作者的通话，May 23, 2016.
(5) “是我乐于继续探索的”：Elena Ferrante, “‘Writing Has Always Been a Great Struggle for Me’: Q. and A.: Elena Ferrante,” interview by Rachel Donadio, New York Times, December 9, 2014.
(6) “敢于公开自己的真实身份”：Susan Cheever, “Is it Time to Take the Anonymous out of AA?,” The Fix, April 7, 2011, https://www.thefix.com/content/breaking-rule-anonymity-aa.
(1) “已然看到她不知何时出现在了观众席间”：Philip Ball, Invisible: The Dangerous Allure of the Unseen (Chicago: University of Chicago Press, 2015), 195.
(2) “使她变得有血有肉起来，对她自身而言意义重大”：Manohla Dargis, “Review: ‘Hello, My Name Is Doris’ about an Older Woman’s Love for a Much Younger Man,” New York Times, March 10, 2016.
(3) “整体面貌、权威感及表达方式”：Francine du Plessix Gray, “The Third Age,” The New Yorker, February 26, 1996, 188.
(4) “女性也惯于将自身视作物体”：出自Alison Carper与本书作者在纽约市的交谈，April 1, 2016.
(5) “辨别他人的情绪状况”：Ana Guinote, Ioanna Cotzia, Sanpreet Sandhu, and Pramila Siwa, “Social Status Modulates Prosocial Behavior and Egalitarianism in Preschool Children and Adults,” PNAS 112, no. 3 (January 20, 2015), 731-736.
(6) “仿佛拥有了一种能接纳任何所接触到的东西的亲和力”：Vera Lehndorff and Holger Trülzsch, Veruschka: Trans-Figurations (Boston: Little, Brown, 1986), 145.
(1) “‘感受到了’橡胶手被刷的刺激感”：Anil Ananthaswamy, The Man Who Wasn’t There: Investigations into the Strange New Science of the Self (New York: Dutton, 2015), 74.
(2) “双重视角”：Anil Ananthaswamy, The Man Who Wasn’t There: Investigations into the Strange New Science of the Self (New York: Dutton, 2015), 199.
(3) “我反而觉得自己像个隐形人”：出自Dr. James Rohrbaugh与本书作者的谈话，September 26, 2016.
(4) “交友的要求等一切偏好”：Daniel Gilbert, “The Psychology of Your Future Self,”出自2014年TED大会上的演讲视频第6分46秒，https://www.ted.com/talks/dan_gilbert_you_are_always_changing.
(5) “有的甚至已经完全消失”：Mathew A. Harris, Caroline E. Brett, Wendy Johnson, and Ian J. Deary, ed. Ulrich Mayr, “Personality Stability from Age 14 to Age 77 Years,” Psychology and Aging 31, no. 8 (December 2016), 862-874.
(1) “和各种超自然生物生存其中”：Terry Gunnell, “Legends and Landscapes in the Nordic Countries,” Cultural and Social History: The Journal of the Social History Society 6, no. 3 (2009), 305-322.
(2) “从旁以间接的方式加以试探”：Priyamvada Natarajan, “Invisibility: The Power of an Idea,” 36th Social Research Conference, New School, New York City, session one, Research and Discovery, April 20, 2017.
(3) “几乎没有什么政府文件会反映出这种情况”：Gunnell, “Legends and Landscapes,” 305-322.
(4) “无形与可见的世界在此融为一体”：Peter J. Gomes, Th Good Book (New York: HarperCollins, 2002).
(5) “了解我们所处的环境”：Tiffanie Wen, “Can Virtual Reality Make You a Better Person?,” BBC Future, October 1, 2014, www.bbc.com/future/story/20141001-the-goggles-that-make-you-nicer.
(1) “每个人都又惊又喜”：出自Mark Skwarek与本书作者的对话，May 6, 2016.
(2) “想象人类在宇宙中的位置”：Anna North, “What If We Lost the Sky?,” Op-Talk (blog), New York Times, February 20, 2015, op-talk.blogs.nytimes.com/2015/02/20/what-if-we-lose-the-sky/.
(3) “融入全人类的大家庭中”：Paul K. Piff and Dacher Keltner, “Why Do We Experience Awe?,” New York Times, May 24, 2015.
(4) “引发一种近似隐喻的自我渺小感”：Paul K. Piff, Pia Dietze, Matthew Feinberg, Daniel M. Stancato, and Dacher Keltner, “Awe, the Small Self, and Prosocial Behavior,” Journal of Personality and Social Psychology 108, no. 6, June 2015, 883-89.
(5) “向世界展示的第一张名片”：Alan Lightman, The Accidental Universe (New York: Vintage Books, 2014), 86.
(6) “从此走上自由之路”：Jacob Needleman, I Am Not I (Berkeley, CA: North Atlantic Books, 2016), 53.
(7) “我倒觉得这样也挺好的”：Mark Strand, “Mark Strand: Not Quite Invisible,”访谈者为Nathalie Handal, Guernica, April 15, 2012, https://www.guernicamag.com/not-quite-invisible/.
(8) “戴着水肺和呼吸器的‘潜水队’”：Hope Ginsburg, Land Dive Team: Bay of Fundy, “Explode Every Day: An Inquiry into the Phenomena of Wonder,” MASS MoCA, North Adams, MA, May 28, 2016-March 19, 2017.
(9) “无形化作有形的载体”：John O’Donohue, “The Inner Landscape of Beauty,”访谈者为Krista Tippett, On Being, August 31, 2017, https://onbeing.org/programs/john-odonohue-the-inner-landscape-of-beauty-aug2017/.