I'm quite familiar with Project Oberon as a professor who studies operating systems and programming languages, but even though this is Hacker News where many of us are familiar with the project, I'm not surprised that there are also many readers who are not familiar with it, since Oberon does not have the userbase of much more popular programming languages and operating systems, and it's not even covered in many undergraduate courses on those topics. Most undergraduate OS courses are Unix-focused, centering on either Linux, Minix, or xv6. The Oberon OS is certainly not Unix. Programming languages and compiler courses tend to vary, but I haven't seen one that uses Oberon.