Score
Title
868
How To Search ELI5: A Quick Reminder About Rule 7
14635
ELI5: Why do cars travel in packs on the highway, even when there are no traffic stops to create groups?
8
ELI5 Retarded Time
5
ELI5:Why is eating healthy 80% of being healthy?
3
ELI5: Why are our fingertips, ear holes and nostrils all approximately the same size?
3
ELI5: Why do animals appear to care so much for their young, but not so much when the 'children' get older?
4
ELI5: Why do our eyes lose focus after staring at something for a while?
17
ELI5: SD. SS. SA. Gestapo. Wehrmacht. Sipo. Kripo. What were they all and how do they relate to each other?
10
ELI5: How many ants does it take to make a functioning ant colony?
3
ELI5:How some stars become pulsars?
5
ELI5: Objectively, what are the limitations of carbon dating?
3
ELI5; What is the difference between a break and a fracture?
5
ELI5: Air movement in a house
4
ELI5: How can sperm cells "swim" through something as thick as seminal fluid? You wouldn't be able to swim through honey for example.
4
ELI5: Why can't there be an "universe's point of reference" in relativism?
5
ELI5: Why/how can most species of animals hold their breath underwater for far longer than humans can?
2
ELI5:What causes us to cry in real life when we are crying when we are sleeping?
4
ELI5: How are we able to track debris in low earth orbit so effectively?
3
ELI5: If I use the same amount of coffee grounds but more water, does my caffeine content change?
9
ELI5: Why are cones and pyramids exactly 1/3 of a cylinder or prism's volume?
5
ELI5: What causes exhausts to have that rasp-y sound people tend to associate with tuners? (civics, integras, etc)
2
ELI5: Why is it stated sharks will suffocate if they quit swimming, but I see examples like the white-tipped reef shark who spend the day laying on the bottom?
15
ELI5: When and why did 8 hours of sleep become the standard for a solid night’s rest?
3
ELI5: Why do you always close your eyes while sneezing?
8
ELI5: Why sliding a knife makes a better cut than just pressing it down?
1
ELI5: How a bong works
1
ELI5: Why is it easier to drink from a paper cup than from a glass mug when moving in a car?
43
ELI5: How come smart phones can run intense games without a fan and still not burn the CPU, but a desktop computer can't even load the desktop for more than a few minutes without permanent damage?
1
ELI5: Why do jet skis/jet boats work better when the nozzle is not in the water?
3
ELI5: What is "Mother's Intuition" and/or is it real?
2
ELI5: What causes us to perceive words that we use everyday as mispelled or mispronounced when they actually aren't?
1
ELI5: Why is the term "Patient Zero" instead of "Patient One?"
0
ELI5: How are glasses lenses put into and taken out of the frame without breaking them?
1
ELI5: What does it mean when the European Parliament adopts a report?
4
ELI5: Why Do Hot Things, E.G. Fire, Molten Materials Tend To Emit Light?
2
ELI5:I know from the local game magazine that elk are hunted in PA, however this map from wikipedia shows the entire state as "former" elk range. What criteria are used to determine this if there can still be elk in former ranges?
1
ELI5: Which pixel colors are shown when a high resolution video is played on a low resolution screen?
36
ELI5: Why is ?4 = -2 false?
2
ELI5: Why do bank cheques only have account name?
8
ELI5: Why do certain types of noise enhance our abilities to focus and study whereas others don't?
127
ELI5: If we breathe in O2 and use the oxygen, how do we release CO2? The same ammount of oxygen we took in, just an added carbon atom
6 nmycon They do use duplicate keys. I was with a friend when his dad unlocked and started someone else's car (same colour and it was parked a few spots away) before realizing what had happened. Turns out the actual owner of that car saw us getting in and was understandably freaking out and came running over to her car screaming and pounding on the windows thinking it was being stolen.
5 56Subject Simply put, they are duplicated. That goes for really any key. However there are enough combinations that it's virtually impossible to find a twin lock that your key will work in. If you own a 1997 Honda Accord, and tried your key in every other 1997 Honda Accord you came across, you'd eventually find one that you can open and maybe even start. Years ago I remember a news story where a lady accidentally drove off in another person's car because it was the same make, model, and color, it was parked near her car, and her key just happened to fit it. That was a one-in-a-billion fluke, though.
3 Concise_Pirate No, they are not completely unique, there are just a great many varieties. Yo ho ho! Yer not alone in askin', and kind strangers have explained: 1. [Do all cars have different keys? ](https://www.reddit.com/r/NoStupidQuestions/comments/6ieeab/do_all_cars_have_different_keys/) ^(_9 comments_) 1. [How many unique keys are there in the world? ](https://www.reddit.com/r/NoStupidQuestions/comments/505vl9/how_many_unique_keys_are_there_in_the_world/) ^(_3 comments_) 1. [If locks are supposed to have a unique key for each one, how do master keys work for multiple locks? ](https://www.reddit.com/r/NoStupidQuestions/comments/37szim/if_locks_are_supposed_to_have_a_unique_key_for/) ^(_2 comments_) 1. [ELI5: How do padlock companies make so many locks, yet ensure that your key only opens your lock? ](https://www.reddit.com/r/explainlikeimfive/comments/2j3gpc/eli5_how_do_padlock_companies_make_so_many_locks/) ^(_43 comments_) 1. [ELI5: if every lock is unique and requires a different key to open in, how does a skeleton key open any lock? ](https://www.reddit.com/r/explainlikeimfive/comments/3omzyv/eli5_if_every_lock_is_unique_and_requires_a/) ^(_6 comments_) 1. [ELI5: Why can't my car key open other cars of the same make/model? What's different about my key. ](https://www.reddit.com/r/explainlikeimfive/comments/2hw8b3/eli5_why_cant_my_car_key_open_other_cars_of_the/) ^(_10 comments_) 1. [How are all keys different? ](https://www.reddit.com/r/NoStupidQuestions/comments/7nbtga/how_are_all_keys_different/) ^(_10 comments_) 1. [ELI5: is every house key completely unique? How is this done? ](https://www.reddit.com/r/explainlikeimfive/comments/2rzqx3/eli5_is_every_house_key_completely_unique_how_is/) ^(_11 comments_) 1. [ELI5: How are locks/keys made so that no other key works in any other lock? ](https://www.reddit.com/r/explainlikeimfive/comments/4rtx5c/eli5_how_are_lockskeys_made_so_that_no_other_key/) ^(_8 comments_)
2 HugePilchard Your submission has been removed for the following reason(s): Please search before submitting. This question has already been asked on ELI5 multiple times. If you need help searching, please refer to the [Wiki](/r/explainlikeimfive/wiki/how_to_search). --- *Please refer to our [detailed rules](http://www.reddit.com/r/explainlikeimfive/about/rules)*.
1 enjoyoutdoors Even a pretty small car manufacturer produces half a million cars per year. I checked the key manufacture number on my car keys. It has a five digit number. That means that if they produce 500 000 cars per year, they issue the same keys five times in that year. But, if you sell the cars all over the world, what are the odds that two cars with identical keys will end up in the same parking lot? Slim. Very slim. It still happens, though. And that is kind of hilarious, don't you think? Anyway. Modern cars don't just rely on the physical key any more. They also have an electronic feature that is called an *immobilizer*. Technically, that is a software feature in one of the onboard computers that requires that the right key is present in the car. Not just the physical key, but also a unique piece of electronics that is manufactured separately from the physical key, that is hidden in the key handle. That the car is then specifically told to pay attention to, once for each key set you get when you buy the car. My car is keyless. There is a physical key inside the key fob that I can extract by pressing a button, pulling and whatnot. But it's only use is to open the drivers door in case of an emergency when the battery has run out. There is no other physical key lock on the car. The car responds to the presence of the key fob. A radio signal. Where the key identifies itself to the car. And it's the actual presence of the radio transmitter inside the car that allows me to ignite the engine and drive off. For fun, I guess, the key fob also has buttons that are able to unlock the doors. And that is yet another radio system. So, technically my car uses three different systems. One to open the door in case of an emergency. One to start the car and use the keyless lock/unlock feature. And one to open and lock the car from a distance. It's only the physical key that is the issue here. The others are a lot easier to manufacture with a unique identity.
6 0 nmycon They do use duplicate keys. I was with a friend when his dad unlocked and started someone else's car (same colour and it was parked a few spots away) before realizing what had happened. Turns out the actual owner of that car saw us getting in and was understandably freaking out and came running over to her car screaming and pounding on the windows thinking it was being stolen.
5 0 56Subject Simply put, they are duplicated. That goes for really any key. However there are enough combinations that it's virtually impossible to find a twin lock that your key will work in. If you own a 1997 Honda Accord, and tried your key in every other 1997 Honda Accord you came across, you'd eventually find one that you can open and maybe even start. Years ago I remember a news story where a lady accidentally drove off in another person's car because it was the same make, model, and color, it was parked near her car, and her key just happened to fit it. That was a one-in-a-billion fluke, though.
3 0 Concise_Pirate No, they are not completely unique, there are just a great many varieties. Yo ho ho! Yer not alone in askin', and kind strangers have explained: 1. [Do all cars have different keys? ](https://www.reddit.com/r/NoStupidQuestions/comments/6ieeab/do_all_cars_have_different_keys/) ^(_9 comments_) 1. [How many unique keys are there in the world? ](https://www.reddit.com/r/NoStupidQuestions/comments/505vl9/how_many_unique_keys_are_there_in_the_world/) ^(_3 comments_) 1. [If locks are supposed to have a unique key for each one, how do master keys work for multiple locks? ](https://www.reddit.com/r/NoStupidQuestions/comments/37szim/if_locks_are_supposed_to_have_a_unique_key_for/) ^(_2 comments_) 1. [ELI5: How do padlock companies make so many locks, yet ensure that your key only opens your lock? ](https://www.reddit.com/r/explainlikeimfive/comments/2j3gpc/eli5_how_do_padlock_companies_make_so_many_locks/) ^(_43 comments_) 1. [ELI5: if every lock is unique and requires a different key to open in, how does a skeleton key open any lock? ](https://www.reddit.com/r/explainlikeimfive/comments/3omzyv/eli5_if_every_lock_is_unique_and_requires_a/) ^(_6 comments_) 1. [ELI5: Why can't my car key open other cars of the same make/model? What's different about my key. ](https://www.reddit.com/r/explainlikeimfive/comments/2hw8b3/eli5_why_cant_my_car_key_open_other_cars_of_the/) ^(_10 comments_) 1. [How are all keys different? ](https://www.reddit.com/r/NoStupidQuestions/comments/7nbtga/how_are_all_keys_different/) ^(_10 comments_) 1. [ELI5: is every house key completely unique? How is this done? ](https://www.reddit.com/r/explainlikeimfive/comments/2rzqx3/eli5_is_every_house_key_completely_unique_how_is/) ^(_11 comments_) 1. [ELI5: How are locks/keys made so that no other key works in any other lock? ](https://www.reddit.com/r/explainlikeimfive/comments/4rtx5c/eli5_how_are_lockskeys_made_so_that_no_other_key/) ^(_8 comments_)
2 0 HugePilchard Your submission has been removed for the following reason(s): Please search before submitting. This question has already been asked on ELI5 multiple times. If you need help searching, please refer to the [Wiki](/r/explainlikeimfive/wiki/how_to_search). --- *Please refer to our [detailed rules](http://www.reddit.com/r/explainlikeimfive/about/rules)*.
1 0 enjoyoutdoors Even a pretty small car manufacturer produces half a million cars per year. I checked the key manufacture number on my car keys. It has a five digit number. That means that if they produce 500 000 cars per year, they issue the same keys five times in that year. But, if you sell the cars all over the world, what are the odds that two cars with identical keys will end up in the same parking lot? Slim. Very slim. It still happens, though. And that is kind of hilarious, don't you think? Anyway. Modern cars don't just rely on the physical key any more. They also have an electronic feature that is called an *immobilizer*. Technically, that is a software feature in one of the onboard computers that requires that the right key is present in the car. Not just the physical key, but also a unique piece of electronics that is manufactured separately from the physical key, that is hidden in the key handle. That the car is then specifically told to pay attention to, once for each key set you get when you buy the car. My car is keyless. There is a physical key inside the key fob that I can extract by pressing a button, pulling and whatnot. But it's only use is to open the drivers door in case of an emergency when the battery has run out. There is no other physical key lock on the car. The car responds to the presence of the key fob. A radio signal. Where the key identifies itself to the car. And it's the actual presence of the radio transmitter inside the car that allows me to ignite the engine and drive off. For fun, I guess, the key fob also has buttons that are able to unlock the doors. And that is yet another radio system. So, technically my car uses three different systems. One to open the door in case of an emergency. One to start the car and use the keyless lock/unlock feature. And one to open and lock the car from a distance. It's only the physical key that is the issue here. The others are a lot easier to manufacture with a unique identity.