" The New York minute you push the spin clitoris on a time slot machine , it screw if it ’s a winner or not . The simple machine also knows how much you ’re live to win . "
Recently,u/KnowledgeAlarming615asked the good people ofr/ask, “What fact is common knowledge to people who work in your field, but almost unknown to the rest of the population?”. Here are some of their answers:
1.“Coffee shopsspend moreon milk than coffee.”
— u / SincereWigeon8
2.“There is no difference between a violin and a fiddle other than how you play it.”
— uracil / enragedHyena0
3.“Libraries throw away or recyclethousands of booksroutinely. A modestly-sized library might get rid of a thousand books a month.”
— u / eightinchgardenparty
4.“The maximum spacing between spindles in a railing is four inches because that’s the average size of a baby’s head.”
" Most building officials will carry a four - column inch firmament with them when doing review on young construction . "
— u / amazedMare8
5.“Most things stamped with ‘BPA-free’ would never have contained it in the first place.”
" Things like Ziploc bags or many reusable containers , for exemplar , are made from polyethylene . They would n’t ever curb BPA , which is a polycarbonate . It ’s purely a marketing impostor to take reward of the perception that BPA is regretful . "
— u / GoldStandard785
" In a similar vein , when I lived in San Jose there was a small securities industry I went to that had ' gluten - free ' gummed label on their unmingled rotisserie chicken . "
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— u / TheFckingMellowMan
" My grocery store label H2O as gluten - destitute . "
— u / Head_Spite62
6.“Virtually every piece of copper, aluminum, or steel you come across has been chopped to bits, refined, and melted down dozens, if not hundreds, of times.”
" Copper pipe ? Probably started out as hundreds of dissimilar wires from various equipment from around the world at one point . "
— u / ardentRice2
" Metal is so metallic element … "
— u / StomachReasonable459
7.“Most 911 calls an ambulance receives on a daily basis are not remotely close to being emergencies.”
— uracil / selfishFish4
" Can support . I used to work for the London Ambulance Service as a starter . My job was to triage the situation to ensure our resources were n’t being wasted on place that could be addressed by other mean value . ( ER , oecumenical practice ) .
On the other hand , there are aesculapian situations that can go from a non - pinch to an emergency in the blink of an eye . "
— u / Babedog
8.“Oil paintings take months to truly ‘dry’. It’s best practice to not add a sealant until six months to a year after it is dry to the touch.”
— uracil / Alyursinho
" I took one house painting class in college and you had to pick oil or acrylic at the start . The instructor articulate some older oil painting carry class to dry out … I picked acrylic . "
— u / Main_Conversation661
9.“An electrical engineer isn’t an electrician.”
— uracil / gloomyBurritos0
10.“The instant you push the spin button on a slot machine, it knows if it’s a winner or not. The machine also knows how much you’re going to win.”
" All that spinning of the wheels and appearance of choice in fillip period of play is simply for show . "
— atomic number 92 / FireMissionII
" I was just issue forth here to remark this !
It does n’t matter what number or gem box or shell you select , nor what retriggers or untamed reels appear … the amount you ’ll win is determine the moment you spin by a random bit source that is incessantly run in the backcloth . "
— atomic number 92 / classyrock
11.“Cement is an ingredient in concrete. Most people use the terms interchangeably, but that’s incorrect.”
— u / Accomplished - Care335
12.“Tarmac is the material, apron is where planes park.”
— uranium / jrbr549
13.“Psychiatric patients aren’t a big money-generating portion of the medical field, because wealthy donors who give to charity for a specific medical condition they’ve had rarely want to admit to having been treated for a psychiatric condition.”
" Psychiatry dumbfound some of the least amounts of presenter money from foundational grants and charities , which is helping to fuel the homelessness crisis . "
— u / Eleanor - of - Accutane
14.“Sleep apnea can happen to anyone. Old people, overweight people, young people, skinny people, children, babies, athletes. Your insomnia has a very high chance of actually being sleep apnea.”
— u/3Magic_Beans
15.“There is a surprising amount of infrastructure under your feet. You’d be surprised how much public utility runs underneath private property. Always call before you dig.”
— uranium / peskyEggs3
" I ’m acutely aware of this today . ability and transmission line were bring out in my neighborhood by the mass laying fiber . "
— atomic number 92 / Historical_Suspect97
16.“Turning your computer or phone off and on again will fix a solid 70-80% of all problems the device likely has.”
— u / jubilantTruffle6
" I work for a VERY large phone company that I can not disclose , and can guarantee that this is 100 % right . Also , going into and then out of airplane mode to desex any type of cellphone service issue . more often than not , this resets the connexion to the closest tower on your mesh . "
— u / FreeWorldAcctnt
17.“An elevator will go up to the top of the hoist instead of crashing to the floor in most catastrophic failures due to the counterweights.”
— u / ecstaticPie1
18.“I paint for a living. Always prime… primer and finish in one is a scam.”
— u / Mc_Qubed
19.“No, I won’t remember serving you if you come back twenty minutes later for something else. I glance at your face, that’s it. Customers arevery rarelymemorable. You all become a blur.”
— u / nightcoreangst
" Yep . Worked in retail for years . If I remember you it ’s either because you ’re a very effective customer or a very bad one . infer which one is more common ? "
— u / Dr_StrangeloveGA
20.“STD and STI epidemics are very common in old folk homes. Lack of proper sex education coupled with declining inhibitions due to old age and various ailments that cause dementia is a bad combo.”
— u / hi - ergocalciferol - ho
21.“The oil that is extracted from under the Earth’s surface does not come from dinosaurs. It comes from tiny phytoplankton (diatoms) deposited on the shores and beds of inland seas, long before the age of the dinosaurs.”
" Also , the crude itself is trapped inside microscopic - sized spaces within certain type of porous rocks ( minerals such as sandstone and limestone ) that are overlain by other non - porous types of rock ( shale , mica , or salt , for instance ) that prevent the trapped rock oil from migrating to the surface .
Oil does not exist in underground cavern or lake or pools that we basically run out by poke alloy straws into the ground . "
— atomic number 92 / Effective_Afflicted
22.“Vaseline is nothing more than a natural by-product of the oil extraction process, a waxy residue that builds up on oil rig machinery and must periodically be removed.”
23.“Boy bees can’t sting (no stinger). And they’re basically useless — the queen only needs one or two to mate with really, to keep the hive populated. They don’t even forage for pollen.”
" They do nothing but eat up and await for a very slim opportunity to match with the queen . When temporary spend in fall / fall , they ’re evicted from the beehive by the girl , then pass . "
— atomic number 92 / ritzy_knee
24.“Due to the immense number of computers connected to the internet, we ran out of IP addresses* to hand out to each individual device (since the late ‘90’s if you can believe it).”
" To clear this , a method bonk as ' web Address Translation ' was implemented so that we could radical devices behind a single central web gadget . That central meshwork machine is known as a router , though nowadays most people associate that with the WiFi internet . Without our routers and NAT , things would be very different . Imagine having to wait for an computer address to free up before you could associate to your favorite website !
- There are more physical devices than there are public IPv4 addresses , however a “ newer ” standard know as IPv6 is slowly becoming the monetary standard . There are trillions of trillions of IPv6 addresses so we will not be persist into the same issue as IPv4 any fourth dimension shortly . "
— uranium / API_pls
You can watch a video about this here (I’m genuinely mind-boggled):
25.“Endometriosiscan begenetic. One of the primary causes of endometriosisis the mutationin the CFTR gene; the same genetic mutation which causes cystic fibrosis.”
— u / MinxManor
26.“You need a master’s degree to be a certified librarian. And we don’t read all day.”
— atomic number 92 / mudgie321
27.“Room acoustics are more important to sound quality than your speakers (within reason).”
— u / ILove2Bacon
28.“There is no such thing as a perfectly functioning aircraft. Every plane you fly on has a multitude of maintenance issues, just not severe enough to affect the safety of your flight.”
— u / annoyedViper3
29.“Touching your fresh tattoo with your unwashed fingers is bad. It’s absurd how many times we have to tell this to people.”
— u / truthfulDotterel2
30.“Most French fry cartons are edible or biodegradable.”
— uranium / DEADFLY66
31.“Most people are not good at detecting lies and consistently score no better than chance (50/50) when tested. The score goes up slightly when it’s someone they know that they’re talking to, but not much.”
— atomic number 92 / emptyPear1
Shout out tou/KnowledgeAlarming615andr/askfor having this discussion.
take down : submission have been edited for length and/or clarity .
Thumbnail credit rating : Getty Images / PBS / BBC / Channel 4
