>>510107153
>homeopathic "meds" for cancer patients
hilariously grimdark
https://files.catbox.moe/dhv3tu.webm

>>510107263
It's mostly discretionary, actually - it's just that there aren't that many different fleets, and operators; and thus different designs
You'd be pretty disappointed if you learned about the failure that is trans-European rail infrastructure capabilities
They made a standard called "ETCS" in like year 2000 and put in 70 man-years into defining and researching the specification
Then they came up with multiple revisions and in reality there exist multiple partial and non-compatible physical implementations of the protocol
It's a little like with USB-C