@villares Oh very interesting! I guess one reason to go to college for CS after 30 years would be to get access to journals.
@davebauerart In the end, I couldn't download it myself! I found this other link (I'm afraid it is not the same paper) with Open Access at the ACM Digital Library: https://dl.acm.org/doi/10.1145/3626252.3630818 (free you just need to log in / register)
@villares ACM is great, I love that they are primarily open access now. I am not a researcher but I love learning! Thanks.