For reference:

    Shoe-string theory: Science shows why shoelaces come untied
    http://exactlyscience.com/archives/11980.html
    https://news.ycombinator.com/item?id=14093739
    2017-04-12 Comments: 0, points: 1


    The physics of shoelaces becoming untied
    https://phys.org/news/2017-04-shoe-string-theory-science-shoelaces-untied.html
    https://news.ycombinator.com/item?id=14094032
    2017-04-12 Comments: 0, points: 13


    Shoe-string theory: Science shows why shoelaces come untied
    http://news.berkeley.edu/2017/04/11/shoe-string-theory-science-shows-why-shoelaces-come-untied/
    https://news.ycombinator.com/item?id=14095839
    2017-04-12 Comments: 0, points: 1


    Mystery of why shoelaces come undone unravelled by science
    http://www.bbc.co.uk/news/science-environment-39573642
    https://news.ycombinator.com/item?id=14098725
    2017-04-12 Comments: 0, points: 1


    The roles of impact and inertia in the failure of a shoelace knot
    http://rspa.royalsocietypublishing.org/content/473/2200/20160770
    https://news.ycombinator.com/item?id=14100199
    2017-04-12 Comments: 0, points: 2


    The Knotty Science of Shoelaces
    https://www.theguardian.com/fashion/shortcuts/2017/apr/12/string-theory-the-knotty-science-of-shoelaces
    https://news.ycombinator.com/item?id=14102323
    2017-04-12 Comments: 0, points: 1


    Why do shoelaces untie themselves? This team may have the answer
    http://www.sciencemag.org/news/2017/04/why-do-shoelaces-untie-themselves-team-may-have-answer
    https://news.ycombinator.com/item?id=14102780
    2017-04-12 Comments: 0, points: 2


    How shoelaces come undone
    http://www.economist.com/news/science-and-technology/21720610-three-californian-engineers-have-found-out-answer-knotty-problem-how
    https://news.ycombinator.com/item?id=14104866
    2017-04-13 Comments: 0, points: 1


    Unraveling Why Shoelace Knots Fail
    https://www.scientificamerican.com/article/unraveling-why-shoelace-knots-fail1/
    https://news.ycombinator.com/item?id=14105410
    2017-04-13 Comments: 0, points: 1


    Unravelling why shoelace knots fail
    https://www.nature.com/news/unravelling-why-shoelace-knots-fail-1.21815
    https://news.ycombinator.com/item?id=14105461
    2017-04-13 Comments: 0, points: 1

You must be new here!

If [like I do], you browse HN by the "new" section, you'll see this time after time after time after time...

I don't know what's to be done about it. HN don't seem to care and it seems like a huge number of visitors to the site just can't be bothered spending a few seconds to check whether or not a story has already been submitted, before adding their own noise to the signal.

From the website management point of view one difficulty is that; on the intarwebs in general, the vast majority of these stories originate from a single news agency or press release and are then mirrored across countless other 'news' sites. So, in effect the problem increases exponentially: one story source is republished across 20 different websites and then each of those 20 website articles is submitted to HN by 20 different people.