I was expecting Mathologer's book when you mentioned shoelaces. Thanks for the link

https://www.ams.org/books/mawrld/024/mawrld024-endmatter.pdf

> whereas old search engines would find it right away

One of my pet peeves is how Google makes it hard to get at the url to share directly from the search results. Yes there's the share link but that does not link to the original.