For most people, diagnosing a dodgy internet connection is nigh on impossible. After all, the internet is a complex hodgepodge of hardware and software, and the odd jumpy Zoom call is often accepted as an inexplicable feature of a network we don’t well understand. But internet connection issues are actually quite easy to explain. They arise when the flow of data along internet cables is interrupted, most frequently when the demand to use the cables is very high. That’s why your connection seems worst during “peak TV viewing” hours, when everyone’s trying to stream videos using the same cables at…

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