There was a vogue for putting chemicals in the pool that turned purple when they mixed with pee.
tl;dr?
"Contrary to the warning many children are given – that a coloured cloud will appear around them if they pee – there is currently no urine indicator dye that could be used in a pool."
"the most common pool myth of all time"
This is why (at least in the US), standard (and required) practice is to place a lock on the source of energy, and retain the only key to said lock. If multiple workers are all working on the same circuit, each worker has his (or her) own lock on the circuit.
It's called lockout/tagout, and there are SEVERE fines for removing somebody else's lock (and if somebody gets killed, due to your removing his lock, that would be considered manslaughter)
It's mandatory in the UK too. Often ignored by independent electricians working by themselves, but hopefully less so by those working for large companies....... UK Health and Safety Executive page on the topic: http://www.hse.gov.uk/safemain...
DPRK has one network under central control, much like a large corporate entity... it's not like there is a choice of ISPs who have to link with each other!
Anyways, the DPRK internet as used by the those DPRK citizens (still a very small percentage of the overall population) is completely airgapped from the public internet as we know it. Only a very very small number of elites have access to the 'real' internet...
Slashdot Mirror
Uh... no.
VIN's are (supposed to be) unique. Your PIN is (probably) not. ......
whoosh!!!!!
There was a vogue for putting chemicals in the pool that turned purple when they mixed with pee.
tl;dr? "Contrary to the warning many children are given – that a coloured cloud will appear around them if they pee – there is currently no urine indicator dye that could be used in a pool." "the most common pool myth of all time"
This is why (at least in the US), standard (and required) practice is to place a lock on the source of energy, and retain the only key to said lock. If multiple workers are all working on the same circuit, each worker has his (or her) own lock on the circuit.
It's called lockout/tagout, and there are SEVERE fines for removing somebody else's lock (and if somebody gets killed, due to your removing his lock, that would be considered manslaughter)
It's mandatory in the UK too. Often ignored by independent electricians working by themselves, but hopefully less so by those working for large companies....... UK Health and Safety Executive page on the topic: http://www.hse.gov.uk/safemain...
DPRK has one network under central control, much like a large corporate entity... it's not like there is a choice of ISPs who have to link with each other! Anyways, the DPRK internet as used by the those DPRK citizens (still a very small percentage of the overall population) is completely airgapped from the public internet as we know it. Only a very very small number of elites have access to the 'real' internet...