Score
Title
759
How To Search ELI5: A Quick Reminder About Rule 7
13926
ELI5: how do cuts on the inside of your mouth, on your cheek, tongue and lip not get super infected by all of our nasty mouth germs?
39
ELI5: How to find lumps in breast? Everything feels lumpy, I don't get it.
26
ELI5: How are things like "Senior Citizen" discounts and 55+ communities not considered age discrimination?
36
ELI5: Why do airplane engines rev up so fiercely upon landing?
20383
ELI5: How do movies get that distinctly "movie" look from the cameras?
5
ELI5: how come people sometimes shake their legs or bounce them up and down repetitively when when they are sitting?
7
ELI5: Why does the air above a fire look rippled/distorted?
12
ELI5: Why is the natural instinct when feeling extreme emotion (e.g. fear, sadness, joy) to cry?
5
ELI5: Why did that 1971 Coke ad become so legendary?
3
ELI5:Why does mouthwash burn when you swish?
4
ELI5: What is a magic eraser and why does it work?
7
ELI5: Why is the normal force not greater than gravity?
7
ELI5: Why are 2 liter sodas cheaper than 20 oz sodas?
85
ELI5: Whenever you have a condition that makes you itchy (e.g. bug bite, dry skin, fungus), scratching typically makes the problem worse. So why is our urge to scratch so strong?
2
ELI5: Why, when releasing ear pressure - that might come from a flight, does one ear consistently release before the other?
2
ELI5: insects getting into a home but unable to get out
5
ELI5: Delaunay triangulation/Voronoi diagram algorithms
12
ELI5: How does a clone differ from an identical twin?
5
ELI5: How do insect and bug sprays kill insects but don't harm us
2
ELI5: Why does our depth perception get so bad while covering one eye or wearing an eye patch?
2
ELI5: In Figure Skating, What's the difference between a (Triple) Lutz vs Loop vs Flip vs Axel vs Salchow?
1
ELI5: Why do flickering lights cause headaches for most people while strobe lights are ok for most?
0
ELI5 What am I hearing when it thunders during a storm?
1
ELI5: Why is fighting a two front war a disadvantage?
5
ELI5: How identical cells in a fertilized egg differentiate to produce different body parts?
1
ELI5: What's the difference between welding and soldering?
1
ELI5: How does a kidney infection cause nausea?
12
ELI5: Why does hot water release tea from tea leaves better than cold water?
7
ELI5 why do combustion engines hum instead of sounding like a high rate of fire machine gun?
7
ELI5: Why do smartphones use chips that have several cores (6 to 8) clocked at low speeds (1.8 to 2.3 GHz) whereas desktops use chips that have fewer cores (2 to 6) clocked at high speeds (3GHz and up)?
1
Eli5: Why diamonds are rip offs?
5
ELI5: Why are there so many "Chinatown" neighborhoods in different North American cities? Was there a large exodus from China some time last century or so?
1
ELI5:What determines whether cold + preciptation = snow, hail, sleet, or freezing rain?
1
ELI5: How do walks for cancer raise money?
1
ELI5:Given that both are determined by neutral networks in the brain, why can’t you change handedness like you can change your mind?
1
ELI5: Why do cold objects often feel wet or damp?
5
ELI5: What is Saccadic Masking, why does it happen, and is it possible to prevent?
8
ELI5 Why does everyone say not to land in the water if your parachute fails or some other reason?
0
ELI5: why when you hurt yourself does rubbing it help?
2
ELI5: How does software know where to appropriately hyphenate words?
24 wille179 It's psychological. The best explanation of it I've heard is that yawning serves to aid the brain in getting more oxygen, something to help fight fatigue. In pre-civilization tribal groups, if you're tired, it's almost certain that the people traveling/working alongside you are also tired. Yawning thus is effectively also a way of subconsciously telling the group that, "Hey, I'm tired. Are you tired? Perhaps we should all wake up a bit and pay attention to our surroundings some more." It's a group survival mechanism, and an ancient one at that, seeing as animals like dogs and cats also yawn.
6 Zombiac3 They are contagious, not infectious. No one knows the exact answer and all we really have is some speculation as to why.
1 [deleted] [removed]
1 Veritas3333 It's a sign of empathy. One sign of a psychopath is that they don't "catch" a yawn. Humans can even catch yawns from other animals. Only one other animal on earth can catch a yawn from another species... Dogs! My dog always yawns in response to my yawns!
1 Genothegreat I've also heard that yawning was a mechanism in early man to signify safety. When we were more nomadic, people at the front or back of a group of traveling people would yawn. The yawn would then pass through the group, showing that currently there was no danger.
21 0 wille179 It's psychological. The best explanation of it I've heard is that yawning serves to aid the brain in getting more oxygen, something to help fight fatigue. In pre-civilization tribal groups, if you're tired, it's almost certain that the people traveling/working alongside you are also tired. Yawning thus is effectively also a way of subconsciously telling the group that, "Hey, I'm tired. Are you tired? Perhaps we should all wake up a bit and pay attention to our surroundings some more." It's a group survival mechanism, and an ancient one at that, seeing as animals like dogs and cats also yawn.
6 0 Zombiac3 They are contagious, not infectious. No one knows the exact answer and all we really have is some speculation as to why.
1 0 [deleted] [removed]
1 0 Veritas3333 It's a sign of empathy. One sign of a psychopath is that they don't "catch" a yawn. Humans can even catch yawns from other animals. Only one other animal on earth can catch a yawn from another species... Dogs! My dog always yawns in response to my yawns!
1 0 Genothegreat I've also heard that yawning was a mechanism in early man to signify safety. When we were more nomadic, people at the front or back of a group of traveling people would yawn. The yawn would then pass through the group, showing that currently there was no danger.