It's also not random. I've talked a couple of times in my life to strangers in public transport, well, they actually talked to me, both times somehow accidental

It's also not random. I've talked a couple of times in my life to strangers in public transport, well, they actually talked to me, both times somehow accidentally people who I talked to were IT professionals, one was a programmer, the other one was a sysadmin and it was in the 90s in former soviet republic, hard to randomly encounter such people back then.