UNIX V4 is back: I booted into the 1973 OS and it made me weirdly happy

Last year, researchers at the University of Utah found a copy of Unix lying around on a 9-track magnetic tape. It’s special because that version of Unix was lost until it was recovered from that magnetic tape 52 years later. The researchers managed to successfully reconstruct it, and then they made the copy public. Anyone can download it and run it inside a virtual machine. So I did just that, and it made me so giddy to use it.