this post was submitted on 20 Jun 2025
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xkcd

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xkcd #3105: Interoperability

Title text:

We're getting a lot of complaints from commuters who were routed onto a coaster, but the theme park patrons who spent hours stuck on an intercity line are also not happy.

Transcript:

[A close-up shot of Black Hat from the shoulders up]
Black Hat: Compatibility and interoperability are so important.

[A zoom out reveals that Black Hat is standing in front of and pointing at a diagram showing a commuter subway car and a roller coaster car, and the tracks they both run on. Standing next to him are Cueball and Hairbun]
Black Hat: For example, most subway rails are 143.5 cm apart. But many roller coasters use a narrower 110 cm gauge.

[This panel shows only Black Hat]
Black Hat: For the last few years, our company has been quietly retrofitting roller coasters to use 143.5 cm tracks.

[Black Hat now has his fists raised]
Black Hat: Soon, we can begin phase 2.
Voice from off-panel: Maybe interoperability is actually bad.
Black Hat: If you listen to the destination announcement while boarding, you'll be fine.

Source: https://xkcd.com/3105/

explainxkcd for #3105

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[–] schnurrito@discuss.tchncs.de 25 points 1 week ago

I am not sure I have seen track gauges given in centimeters ever before. Usually I see that standard gauge is 1435 millimeters.