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A comment on What Left-Handedness Reveals About How the Brain Works (2014). Parent comment

Re:What Left-Handedness Reveals About How the Brain Works (2... by indiandragon on Sunday January 06, 2019 @07:27AM (#18837997)
> Carl Sagan once hypothesized that the cultural link between left-handedness and badness arose due to the left hand’s use for hygiene purposes in nonindustrialized countries

e.g In India, people eat with their right hand and clean shit with their left; both in bare hands along with water without any tools.

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Re:What Left-Handedness Reveals About How the Brain Works (2... by coldtea on Sunday January 06, 2019 @07:42AM (#18838051)
Hopefully with some hand washing involved in between...
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Re:What Left-Handedness Reveals About How the Brain Works (2... by southerndrift on Sunday January 06, 2019 @08:23AM (#18838175)
How do you clean one hand without the other? If you don't have soap, wouldn't cleaning hands actually increase the risk of infections?
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Re:What Left-Handedness Reveals About How the Brain Works (2... by indiandragon on Sunday January 06, 2019 @08:45AM (#18838265)
>If you don't have soap

I don't think unavailability of soap posed higher risk than unavailability of the toilet by itself. I guess areas where soap/water is unavailable, they go 'Bear Grylls' of cleaning with leafs.

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Re:What Left-Handedness Reveals About How the Brain Works (2... by indiandragon on Sunday January 06, 2019 @08:40AM (#18838247)
obviously yes, apparently general social consensus here seems it is hygienic than using paper to do the job.

At-least middle class families & above have water faucet to go along with western model toilets; though the concept of using tissue paper for cleaning shit is still alien for majority here.

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Re:What Left-Handedness Reveals About How the Brain Works (2... by coldtea on Monday January 07, 2019 @02:57AM (#18843552)
>obviously yes, apparently general social consensus here seems it is hygienic than using paper to do the job

Seems like "cleaning by hands" is a relic consensus from the eras of the unavailability of paper. Water I can understand.

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Re:What Left-Handedness Reveals About How the Brain Works (2... by andai on Monday January 07, 2019 @07:43AM (#18844702)
And never the twain shall meet!
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