Languages need a lot of upkeep if you want to keep speaking them fluently. On the other hand, just like muscle, once you've had it it's a lot easier to get back than having to put it on for the first time.
My husband's mother, a German who spent a few semesters in Britain in the late 50s and subsequently taught English and geography in gymnasium (German academic track middle and high school), taught him and few other neighborhood children some English during her maternity year after his younger sister was born. He was 4. She then went back to work, he went into regular German Kindergarten (preschool), and the whole matter was forgotten.
Until he was 10 and started classroom English in 5th grade - he had a very easy time of it. That year of getting English sounds into his little kid brain, despite coming from a non-native speaker who had only spent a few semesters in England, did some sort of magic, because ever since I've known him, he's sounded British enough to fool Americans (British people, on the other hand, can hear that something's off, and of course can't place his accent). He's a more fluent English speaker than I am a German speaker, but we both have to speak more English at our jobs than German.
That's why you see so many job requirements that are ultra specific, or just ghost requirements. They put that out and claim they couldn't find anybody domestically.
This is why the job title will be something obscure like “AI Scientist” which isn’t something anyone calls themselves. Since no one fits the bill domestically, this allowed Zoom to hire one for $75k in San Jose, CA, one of the most expensive COL cities in the country.
When I applied (and got H1B) in the 2000’s they threw every technology on my resume into the job requirement for DOL and suddenly I was one of the very few qualified candidates
Not through a single system, the advantage of diversity rather than winner-takes-all.
The world cup final itself (and other major events) is distributed from the host broadcaster to either on site at the IBC or at major exchange points.
When I've done major events of that magnitude there's usually a backup scanner and even a tertiary backup. Obviously feeds get sent via all manner - the international feed for example may be handed off at an exchange point, but the reserve is likely available on satelite for people to downlink on. If the scanner goes (fire etc), then at least some camera/sound feeds can be switched direct to these points, on some occasions there's a full backup scanner too.
Short of events that take out the venue itself, I can't think of a plausible scenario which would cause the generation or distribution of the broadcast to break on a global basis.
I don't work for OBS/HBS/etc but I can't imagine they are any worse than other broadcast professionals.
The IT part of this stuff is pretty trivial nowadays, even the complex parts like the 2110 networks in the scanner tend to be commoditised and treated as you'd treat any other single system.
The most technically challenging part is unicast streaming to millions of people at low latency (DASH etc). I wouldn't expect an enormous architectural difference between a system that can broadcast to 10 million or 100 million though.
We run a ton of legacy cruft that's still on Java 8. Extended support is available until at least 2030. It's rock solid for us and migration is not easy unfortunately, even Java 11 is a challenge.
