Working on semiconductors/electronics is "old tech" that is still very important. It's been around for quite a while. Compare to Fortran or supercomputers. Was

Working on semiconductors/electronics is "old tech" that is still very important. It's been around for quite a while. Compare to Fortran or supercomputers. Was important, isn't much so these days, although is still used. What I'm saying is that you got on a train that has been running longer than some other trains, hence you meet older people on the train. As someone who has little interest in management I hope to be as successful as you, in this sense of picking long distance trains.