While thinking a lot about dependencies and disaster plans, I started noticing the fire escapes that are a staple of New York City buildings. The result was a talk called The History of Fire Escapes.
Video: https://www.infoq.com/presentations/history-fire-escapes-resilience
Slides: https://www.slideshare.net/TanyaReilly/the-history-of-fire-escapes-103869960
InfoQ interview: https://qconnewyork.com/ny2018/ny2018/keynote/history-of-fire-escapes.html
Reference material: http://noidea.dog/fires