Comment by xani__

> Interruptions don't scale, just as single backbone networks don't scale (CSMA-CD anyone?) and modern networking has shifted to star topologies.

The difference is that packet has max length and therefore can be mixed with other senders, not be infinite monologue that chokes whole traffic in the network

As for interrupts, you just need to queue them instead of them causing collision. Notice the need for question and let the other side finish the sentence, as what they say next might be answer to question