Since this thread's been flagged off the front page, I'm going to use it for something off-topic. I found the paper you said you were looking for in this comme

Since this thread's been flagged off the front page, I'm going to use it for something off-topic. I found the paper you said you were looking for in this comment[1], and sent a link to the address you have in your HN bio. It probably got spam filtered. [1]https://news.ycombinator.com/item?id=20805140 https://news.ycombinator.com/item?id=20805140 I can't legally post a link to a non-paywalled copy on HN, but the ACM allows for authors to host copies on their sites, so you might want to ask Klotz if they'll do so. The digitized title is "Turtles and Defense" by the way.