People discovering that network cables can be used to network things. And then calling it a "trick" (I'm surprised it's not a "hack" actually).
If you know more than others, that's great! but in that case please share some of what you know so the rest of us can learn. Here, for example, it could be possible to add related facts about networking, other ways of connecting computers, obscure details, war stories, bits of history - who knows? All such things could make the discussion more interesting and fun.
(Edit: here's a great example of what I mean. This comment is currently at the top of the thread, which is what we want here: https://news.ycombinator.com/item?id=49506392.)
By contrast, dyspeptic supercilious putdowns do no good, other than perhaps providing a temporary internal status hit (at others' expense).
https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...
They'll think hard about a beautiful unrealistic idealisation of the problem, and/or treat a software abstraction as if it's the underlying reality, e.g. (of the latter) thinking networking starts with HTTP and languages start with JavaScript.
And by cheap, any $10 relic will do.
You’ll find their manuals very informative.
Now I still remember when target disk mode over ethernet was being talked about.
Haven't had any issues with them ever in regular use... So pointless even back then...
(, except if you lack an additional power slot or have no switch available)
Look at you with your fancy red Cat5 ;-)
But GigE uses all four pairs, so the hardware has transceivers behind all four pairs, which means even when they're running at 10 or 100, the chipset can choose which pairs to transmit and receive on. Thus all GigE adapters are Auto-MDIX, and it meant I no longer needed to carry a crossover cable, no matter what other device I was talking to.
It's funny how 10/100 cards with Auto-MDIX capability were exotic and expensive, but once GigE had it by default, it became ubiquitous, cheap, and quickly forgotten.
Wait there's more: a couple of simple plastic glasses joined with a string under tension also does the trick.
However more seriously, while being snarky about "obvious" things can be fun, we should all remember to acknowledge the xkcd's "Ten Thousand" effect as a very real law of life.
True in general, but Hacker News isn't a school for beginners to technology.