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The mystery of why left-handers are so much rarer (2016)

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101–110 of 286 posts

Re: The mystery of why left-handers are so much rarer (2016)

#101
post #47

The percentage of left-handedness correlates strongly with how pacifist vs warlike the society is. According to this 2005 study it varies from 3% up to 27%: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1634940/

Interesting that the scale is logarithmic on the homicides number axis.

Re: The mystery of why left-handers are so much rarer (2016)

#102
post #42

Earlier quoted context omitted.

I lose a little faith when I see people nitpick while being wrong.

"Neanderthals were our ancestors" is more wrong than it's right.

Only need to get 'a little bit pregnant` though.

Re: The mystery of why left-handers are so much rarer (2016)

#103
post #99

I write left handed, and use a fork in my left and knife in my right. Left hand for holding a phone or a drinking glass, and for shaving. I'm right eye dominant, though, so I throw, swing, shoot, use scissors, play instruments and use a mouse right handed. I'm not at all ambidextrous, I can't do most of those things with my other hand.

Im also like that..randomly mixed. I write left, but use scissors always with right. Throw and kick are right, but swing and bat is left. Computer mouse left. Taking a phone call is always left hand on left ear...but holding phone to use or text is always right hand. Self check out? Back to left hand for that mostly Lol. If a backpack is on one shoulder it feels weird if it's not on my left shoulder despite being mor…

I thought that scissors were made to be right handed, and you need a 'reversed' pair for left handed people. Or is that a scam?

Re: The mystery of why left-handers are so much rarer (2016)

#104

“ when you look at rare conditions, like Down Syndrome, epilepsy and cerebral palsy, the ratio of left- to right-handers is more like 50:50 rather than 1:10.” Is this a typo? Or are left-handed people way, way more likely to suffer from these rare diseases?

Down syndrome (trisomy 21) and cerebral palsy are something you're born with no? Epilepsy too maybe? (even if it only declares later on in life?)

So how is this not inversing cause and effect:

> Or are left-handed people way, way more likely to suffer from these rare diseases?

Re: The mystery of why left-handers are so much rarer (2016)

#105

I write left handed, and use a fork in my left and knife in my right. Left hand for holding a phone or a drinking glass, and for shaving. I'm right eye dominant, though, so I throw, swing, shoot, use scissors, play instruments and use a mouse right handed. I'm not at all ambidextrous, I can't do most of those things with my other hand.

Me too. It's called mixed-handedness.

https://en.m.wikipedia.org/wiki/Cross-dominance

Re: The mystery of why left-handers are so much rarer (2016)

#106

I write left handed, and use a fork in my left and knife in my right. Left hand for holding a phone or a drinking glass, and for shaving. I'm right eye dominant, though, so I throw, swing, shoot, use scissors, play instruments and use a mouse right handed. I'm not at all ambidextrous, I can't do most of those things with my other hand.

I'm exactly the same on all those (and add kicking to the right-sided list). Cross-dominant [1] is the usual term I use for it.

[1] https://en.wikipedia.org/wiki/Cross-dominance

Re: The mystery of why left-handers are so much rarer (2016)

#107
post #47

The percentage of left-handedness correlates strongly with how pacifist vs warlike the society is. According to this 2005 study it varies from 3% up to 27%: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC1634940/

I wonder if this is where the whole left handedness being associated with the hand of the devil (or any evil) came from historically. Our ancestors probably weren't doing studies like this but like many religious/spiritual restrictions that seem like they are backed by "nothing" at first turn out to have a fair application to life behind them it's probably not too much of a stretch that someone at some point or other noticed something like hey, that village/tribe/whatever near us has a LOT of left handers and they have an awfully suspicious amount of violent incidents happening.

Re: The mystery of why left-handers are so much rarer (2016)

#108
post #99

Earlier quoted context omitted.

Im also like that..randomly mixed. I write left, but use scissors always with right. Throw and kick are right, but swing and bat is left. Computer mouse left. Taking a phone call is always left hand on left ear...but holding phone to use or text is always right hand. Self check out? Back to left hand for that mostly Lol. If a backpack is on one shoulder it feels weird if it's not on my left shoulder despite being mor…

I thought that scissors were made to be right handed, and you need a 'reversed' pair for left handed people. Or is that a scam?

The thing with scissors is, as a left handed person, you'll never find the "reversed" type so you learn to just use "regular" scissors pretty early on. This is probably true with a lot of things, honestly. Yeah I might theoretically be able to cut better with a left handed pair of scissors but since I've never come across a pair I never bothered.

Things get much more interesting with more complex things like golf, snowboarding & skateboarding, shooting, etc. These things all have left-hand optimized equivalants (eg: left handed clubs, snowboards with the bindings set top "goofy", guns with the safety on the opposite side, etc). In all cases its a tradeoff -- you can learn and get good on the equipment designed just for you and then wind up sucking when you are handed equipment that is used by most everybody else or you can just learn to use the "normal" equipment even if slightly suboptimal. Guns, for example, eject their used shells off the right side of the weapon--good luck getting one that ejects off the left side so you can old it opposite of everybody and not have hot metal land on your face.

Computer mice are the same deal... some of those bastards are even molded explicitly for right hand use and are pretty uncomfortable in the left hand.

Being left handed gets weird quick because you are in a minority that most product designers simply don't consider.

Re: The mystery of why left-handers are so much rarer (2016)

#109
post #99

Earlier quoted context omitted.

Im also like that..randomly mixed. I write left, but use scissors always with right. Throw and kick are right, but swing and bat is left. Computer mouse left. Taking a phone call is always left hand on left ear...but holding phone to use or text is always right hand. Self check out? Back to left hand for that mostly Lol. If a backpack is on one shoulder it feels weird if it's not on my left shoulder despite being mor…

I thought that scissors were made to be right handed, and you need a 'reversed' pair for left handed people. Or is that a scam?

There's a slight pressure you put on the hinge when closing them. The handedness aligns the pressure to a closing motion laterally (keeping the blades together) as opposed to opening (pushing the cutting edges apart).

They do in fact make a difference. Trimming my beard with beard scissors requires a bit of a strange grip in my left hand to actually cut well when I switch sides.

Re: The mystery of why left-handers are so much rarer (2016)

#110

“ when you look at rare conditions, like Down Syndrome, epilepsy and cerebral palsy, the ratio of left- to right-handers is more like 50:50 rather than 1:10.” Is this a typo? Or are left-handed people way, way more likely to suffer from these rare diseases?

Or there are simply a lot of people who might be left handed by default but then adapt and learn to be right handed. People with rare conditions like the above might either have more trouble adapting or perhaps socially we put them more in special ed programs where they are observed more closely and stick with their default.
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