This is very clearly a move to sell SpaceX IPO at overinflated prices by promising a vision of a future which is perpetually 5 years away. SpaceX is going to be the next meme stock.
I'm not an expert in any way, but i personally benchmarked [1] juiceFS performance totalling collapsing under very small files/operations (torrenting). It's good to be skeptical, but it might just be that the bar is very low for this specific usecase (IIRC juiceFS was configured and optimized for block sizes of several MBs).
Tailscale works behind NAT, wireguard does not unless you also have a publicly reachable relay server which introduces its own maintenance headaches and cost.
Does a system being deterministic really matter if it's complex enough you can't predict it? How many stories are there about 'you need to do it in this specific way, and not this other specific way, to get 500x better codegen'?
Electric trains don't get power via the tracks like that, they use power lines. Metros are a different matter, but that's not what the article is about.
Interesting, TIL. Trains don't do that where I'm from for obvious safety reasons, but I understand infrastructure everywhere comes with different baggage.
Anywhere with third rail (which is predominantly London and the South-East of England) tends to be fenced off along the sides of the tracks or other things in place to strongly discourage you from walking onto the tracks.
Given that a considerable amount of the UK rail routes date from the late 1800s there are a lot of places where tracks cross roads and therefore mix with other forms of transport (including pedestrians). It's surprising just how little there is in between a pedestrian and a live rail in these situations, here's an example 5 miles or so away from central London: https://maps.app.goo.gl/nPcJM1YxBexaDDKY6
One of those live third rails start less than 5 yards away from where pedestrians regularly walk, with just some angled planks of wood to stop you walking towards them.
We just take it for granted here in the UK. The number of people who die accidentally on the tracks each year is very low, and much lower than those who choose to commit suicide that way.
There's a strong "stay away from train tracks" education whilst growing up.
Metros may have electrified third rail, but the ones next to DB train tracks are all with a top covered third rail. Usualy power deliviery is via catenaries.
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