Sharks also evolve. There were sharks 400M years ago, but they weren't the sharks of today. Some core banking app written in the 70s and still running today on

Sharks also evolve. There were sharks 400M years ago, but they weren't the sharks of today. Some core banking app written in the 70s and still running today on a mainframe that requires software and hardware emulation of a 1970s mainframe is probably a dinosaur. Something like unix that sprang up in the 70s on the same types of mainframes and has evolved and changed a lot over time but still kept a lot of core conceptual DNA is probably a shark. Others I can think of off the top of my head: vi[1], emacs, C, ethernet, smtp, ethernet, excel, rs-232[2], FTP[3] There's probably plenty of others too. [1] in the form of neovim and vim in particular, but also nvi, busybox vi, and probably others. [2] i just got a box from dell that has only one non-network way to interface with it: serial over usb. I had to remember how to set up my line parameters etc. Fun fact about xterm, etc: many of them allow you to do `xterm -l /dev/ttyUSB0 115200` way easier than dealing with picocom or whatever [3] another fun fact, FTP is older than IP.