I did a lot of network work early in my career (high school job at a small town ISP in the early 90's), and have read deeply about / waxed nostalgia for the Arp

I did a lot of network work early in my career (high school job at a small town ISP in the early 90's), and have read deeply about / waxed nostalgia for the Arpanet era ever since. Networking now is as different from my ISP days as they were to the days of IMPs. It's remarkable.