this post was submitted on 05 Apr 2025
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That speed of causality is usually at least 3 times better than you can get in real life
You get 300 million metres per second in light (including radio in free space) so wifi to your laptop is at that speed
A wave in wire (eg ethernet over cat6 cable) is seldom better than 0.9c
Laser light in an optic fibre (how almost all data moves long distance) is about 200 million metres per second as it follows a zig zag path in the fibre reflecting off the walls of the fibre
The future promise of starlink – where your connection goes to a satellite then to another and another satellite until being down linked to the server farm hosting the content – should provide much lower latency