That explains it

April 24th, 2013 at 7:00 am by David Farrar

wpid-photo-17042013-1842

 

Hat Tip: Grumpollie

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10 Responses to “That explains it”

  1. Scott Chris (6,177 comments) says:

    Yeah, well some correlations have more relevance than others.

    For instance, the removal of lead from petrol also shows a strong correlation with falling crime rates. Mightn’t be a causal link, but it warrants further investigation imo.

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  2. Doc Holliday (36 comments) says:

    Microsoft is still making a killing.

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  3. scrubone (3,105 comments) says:

    Try this one:
    http://halfdone.wordpress.com/2013/04/06/what-causes-autism/

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  4. Judith (8,534 comments) says:

    Ah ha, that proves it.
    People who buy shares in IE celebrate success by committing murder.
    When their share value falls, they are more subdued.

    I always knew there was something suspicious about people that play in the stock market (family trusts excluded of course :-))

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  5. Ed Snack (1,927 comments) says:

    Uh, Judith, IE is the product, Microsoft is the company.

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  6. Judith (8,534 comments) says:

    Ed Snack (886) Says:
    April 24th, 2013 at 8:46 am
    ————–
    Yes, I’m aware of that …. but I was poking fun at the picture and the ‘information’ presented on it and how easy it is to read whatever we want into it.

    ;-)

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  7. David Garrett (7,556 comments) says:

    Scott: Quite right..there are many correlations – weak or strong – between various factors and the plummeting rate of homicide in the US from the early 90’s. All of them of course “warrant further investigation” – except one.

    Although there is a strong correlation between more punitive policing and sentencing policies across the US and falling homicide rates, more punitive sentencing had absolutely nothing to do with that. Ask any American liberal academic.

    And the non-evidence of causation will be even stronger here in New Zealand, of that you can be certain. Violent crime peaked in this country in 2009-10, and has been falling since. But New York style policing in South Auckland, and “three strikes”, are playing absolutely no part in that fall at all. Ask any liberal New Zealand academic – in fact ask any New Zealand academic; we only have liberal ones.

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  8. Ed Snack (1,927 comments) says:

    Judith, fair enough, missed the /humour tag…again. I’d blame teh interwebs myself.

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  9. Judith (8,534 comments) says:

    Ed Snack (887) Says:
    April 24th, 2013 at 9:32 am
    —————————

    Yeah, I blame the interwebby thing myself – a lot! (especially when I have wasted time on it and not completed the things in the real world that I should have) Tis a dangerous place the web – hence the name -just ask any fly what a web means to them!

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  10. Andrew (85 comments) says:

    It’s correct that a correlation does not equal causation.

    But I think the following point is often missed – a correlation (direct or indirect*) is a necessary ‘precondition’ to establishing causation. If there’s no direct or indirect relationship – there is no causation.

    *An indirect relationship is one that is ‘masked’ (or to use the technical terms, mediated, moderated, or suppressed) by one or more other variables.

    Geek out.

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