Live data from Hacker News

Never trust a system that seems to be working

twitter.com

11–20 of 376 posts

Re: Never trust a system that seems to be working

#13
There are two good lessons here:

1) Robust system design involves identifying the parts of your system that are mission-critical and always monitoring them. NASA missions have great automation and a 24/7-staffed mission control.

2) If a system failure can result in massive secondary damage, isolate that system. Warehouses receiving orbital payloads should probably be nice and far away from the base you care about.

Re: Never trust a system that seems to be working

#14
post #11

Hmm, what does he mean "I woke up the next day"? Did he leave Factorio running, or did it get an online component while I wasn't looking?

Probably left it running? I've definitely left my factory to idle to build up resources while I'm gone, when I'm playing on peaceful mode.

You could also run headless version of the game on a server and just connect to it for the same effect.

Remember - Factorio is just an idle game with extra steps.

Re: Never trust a system that seems to be working

#15
A more narrow lesson: this is why all SQL statements involving NULL are always false.

> in any case, losing power means the transmitter stops transmitting.

> and here's the fun part: your circuit which controls that inserter is set to insert "if [ICE] > and GETTING NO SIGNAL AT ALL counts the same to it as ICE=0.

> 0 is < 8000.

Re: Never trust a system that seems to be working

#16

One reply tweet notes "a complex system always operates in a failure state", but to find more discussion on this point it's worth noting that this is a restatement of: > "The Fundamental Failure-Mode Theorem (F.F.T.): complex systems usually operate in a failure mode." -- John Gall, General Systemantics (aka Systemantics , aka The Systems Bible ), 1977 https://en.wikipedia.org/wiki/Systemantics > Searching for "funda…

Thank you for introducing me to this rabbit hole. Here's a NYTimes article from 1976 -- note, many issues with the OCR, but still interesting and entertainingly written:

https://www.nytimes.com/1976/12/26/archives/why-nothing-work...

Re: Never trust a system that seems to be working

#19

What drama with the Factorio devs is he talking about at the end (and namesearchers?.. I don't get Twitter sometimes) I've never heard anyone say anything about the Factorio devs except praise their productivity and professionalism.

Kovarex promoted Uncle Bob in the past, who has generated a drama vortex of his own.

Re: Never trust a system that seems to be working

#20
post #11

Hmm, what does he mean "I woke up the next day"? Did he leave Factorio running, or did it get an online component while I wasn't looking?

*they, this is why they hate their tweets being posted here

No post body was provided.
Post reply on HN