You know how modern 3D printers and CNC machines use "G-code" instructions to specify their movement? I learned this tidbit literally yesterday:

The first implementation of a numerical control programming language was developed at the MIT Servomechanisms Laboratory in the late 1950s... The main standardized version used in the United States was settled by the Electronic Industries Alliance in the early 1960s. A final revision was approved in February 1980 as RS-274-D.

So yeah. Remember what Gibson said about the future...

https://en.m.wikipedia.org/wiki/G-code

Things are far more connected than you think.

Check out the Example section for the 1964 RUNOFF document editor. You might see some familiar things

https://en.m.wikipedia.org/wiki/TYPSET_and_RUNOFF

Also communication protocols have pretty long lifespans. Take https://www.kermitproject.org/ for example or the wire standard for Ethernet

1/4" and 1/8" (3.5mm) analogue audio jacks have had a very, very long life, from as far back as the 1890s. A year or two ago when I found my mother using with her iPhone an ancient single-ear mono headphone that probably came with a cassette player in the 80s, which struck me as quite funny. Still works fine.

Just google why the Space Shuttle/SLS SRB were the size they are. Hint: It has to do with Roman war chariots.

It has to do with ass width.

It's an urban legend.

https://www.snopes.com/fact-check/railroad-gauge-chariots/

Basically there are loads of different railway gauges around the world, and indeed, inside the USA itself, which historically had no single standard size.

All roads, railways, and thus tunnels and bridges everywhere are very approximately multiples of the width of a horse's pectoral/pelvic girdles. Nothing especially Roman or anything else about it.