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Optimum Copyright Period Decided by Math

An anonymous reader writes "So how long should a copyright be valid for? A Cambridge student has stepped into the discussion with a dispassionately calculated estimate of the optimal period a copyright should be granted. Ars' point of view: 'Neither the US nor the UK are in any danger of rethinking copyright law from scratch, but if they were looking for guidance in how to set up their systems, Pollock has it. He develops a set of equations focused specifically on the length of copyright and uses as much empirical data as possible to crunch the numbers. The result? An optimal copyright term of 14 years, which is designed to encourage the best balance of incentive to create new work and social welfare that comes from having work enter the public domain (where it often inspires new creative acts).' The original paper is available (pdf) online."

5 of 442 comments (clear)

  1. Good Stuff by eldavojohn · · Score: 5, Interesting
    This Rufus Pollock has some good stuff on his site. I've only had about ten minutes to read over a few of these papers and I'm pretty impressed. Not only is it well written but it aligns heavily with the Slashdot community's interests. For example, the conclusion of his paper The Value of the Public Domain ends with these policy recommendations (the most interesting, in my opinion, is bolded):
    • * When formulating policy the key variable to consider should be social value, which is the sum of commercial value and user value, rather than commercial value alone (in economist's terminology: welfare rather than national income).
    • * When looking at the value of knowledge goods in general, and the public domain in particular, policy makers should take account of the value generated by complementary products and services.
    • * Historically, innovation policy, particularly in relation to intellectual property, is characterized by extensive rent-seeking activity and significant imbalances in power. It is important that this be taken into account in policy making, for example by the provision of a clear set of principles that could safeguard groups that are poorly represented (such as the general public). The public domain while very important to society tends to lack a concentrated set of stakeholders to defend it, compared, for example, to the copyright-based industries.
    • * For some of the categories of works currently covered by copyright, for example music, the introduction of open access along with some form of alternative compensation system promises to deliver significant gains both to creators and to consumers.
    • * Access and preservation of older copyrighted works is a significant problem and should be addressed. This could be done in several, potentially complementary ways, including: introduction of a registration requirement, orphan works provisions, and a reduction in copyright term.
    • * In areas such as open source software and technology standards the first principle should be "do no harm". In particular, it is imperative that policy makers maintain, and strengthen, the exclusion of software and business methods from patentability.
    • * Make public sector information open. This is one of the most direct, and straightforward actions governments can take in promoting the public domain, and it is one that the available evidence suggests will have large benefits both to industry and to the general public.
    He also attempts to show through economic theory that "that a dominant firm may engage in considerable expenditure to maintain its position and the welfare consequences of so doing may be considerable.

    Also interesting is that he conjectures that the burden of proof of ownership in intellectual property should be placed on those attempting to acquire the IP, not anyone else.

    He has a paper detailing a model where innovation occurs without intellectual property in an attempt to show that the assumption regarding IP's relationship to innovation is false.

    Very interesting stuff, to say the least, most of it quite logical which means, of course, that it will be completely ignored by politicians and policy makers.
    --
    My work here is dung.
  2. who's to profit? by iplayfast · · Score: 5, Interesting

    Most books (not talking about the superstars here) are out of print within 3 years. Most publishers, maintain the copyright on the book until it is no longer in print (or something like that). Then the copyright reverts back to the original author. However most publishers won't admit it is no long in print for years and years after it is long gone.

    Most authors have no problem with making copyright much shorter. I've heard values as low as 3 years, with 5 to 10 being the usual suggestion. It's only the Disney's and other superstars of the publishing world that want copyright longer then the normal human lifespan.

  3. Re:Interesting idea, but... by Firethorn · · Score: 5, Interesting

    I'd have to agree with this. A straight percentage rate wouldn't work too well - 5% of 0 is still 0, easy to pay.

    Now a Flat fee of $1k/year to keep a movie* copyright free. Studios such as MGM would have to pay millions a year to keep their products under copyright, eventually the accountants would point out that OldMovies 1-100 aren't making $1k, there's no guarantee that they'd make $1k if released on DVD, so they let the copyright expire.

    I'd have the fee vary, and go up over time. For example - $10/year for a book, for the second 20 years of copyright(the first 20 are free).

    Note: All numbers are approximate.

    *original audiovisual production in excess of 60 minutes, (by original I mean not just a tweaked remix)

    --
    I don't read AC A human right
  4. Often they do by Moraelin · · Score: 5, Interesting

    Actually, it looks to me like just a variation of the popular "have a pre-conceived result you want to reach, then massage logic and numbers to reach it." In this case, outright proposing "my formula says get rid of IP completely" (which he seems to be busy arguing the rest of the time) would have looked suspicious, while "hey, the original 14 year idea was right, let's go back to that" is something that's actually very easy to swallow. So let's massage the maths to support that.

    I'm sorry, I'll

    A) have trouble taking someone seriously as doing dispassionate objective maths when the rest of the time they're on a crusade against copyright and copyright extensions. It's akin to trusting a Sony fanboy to give you a scientific and dispassionate estimate as to which console is the best. But more importantly,

    B) the data he feeds into those formulas is based on guessed numbers. E.g., for the rate of decay, depending on who you choose to believe, in his own paper the estimates range from 2% to 10%. He chooses 5% as the number to go with, but the important thing to realize is that it's just a guess. The accuracy of that number is remarkably low.

    To give you an example of how inacurate that is: for something that decays by 2% per year, after 16 years you've lost only almost 28% of the original value. At 5%, after 16 years you've lost 56% of the original value. At 10% in 16 years you've lost 81% of the value. (I'm using 16 instead of 14 just because I'm too lazy to do more than press the X^2 button in xcalc 4 times. Should be enough for example purposes.) The effects being literally exponential, such a wild inaccuracy is multiplied incredibly. You can produce a wildly different "ideal number of years" by just choosing slightly different guessed numbers to input in those formulas.

    C) I see nowhere a calculation of the error margins. As a corolary of B, what's more interesting for such a calculation with wildly guessed numbers isn't just one value reached with the most likely guess, but what is the _interval_ of plausible results. If you've fed data which could be anything between 2% and 10%, then what is the result for 2% and what is the result for 10%, for a start. Don't give me the result just for 5%. And that's just one of the values there.

    Basically what I'm saying is that even if you trust the formulas to be correct, the insanely large intervals of believable values means you can get almost any number you want to get there, just by picking different guessed numbers. You can use the same formula to get any number between 2-3 years (if you chose to believe everything devalues extremely fast, and everything creates incredible value in derivative works) to well over 50 years (if you choose to go by the idea that even though some crap devalues faster, the most deserving protection are the masterworks that devalue very slowly.) Pick your own pre-conceived number in that range, and there's a valid set of guessed numbers that produces it.

    Anyway, it's used all the time. E.g., if you work in most large corporations, you must have seen at least one (but more likely dozens) of baffling decisions that go somewhat like this:

    How it's supposed to look from the outside: some manager (A) saw that problem X exists and is really a problem, (2) analyzed which products solved that problem, (3) made a list of features and performance characteristics, put them in numbers, and assigned them weights according to their importance in the actual case at hand, (4) dispassionately calculated the weighted score for all of them, and (5) the result happens to say that, objectively, product Y from supplier Z is the perfect choice.

    What really happened: was that the manager had already decided that he wants product Y or just to buy something from company Z, for entirely other reasons. Often (but not always) he even had to scratch his head to figure out a problem X that fits that solution. At any rate, from there the analyzed features and their weights are juggled and massaged until product Y ends up on top. There you go, now the cold dispassionate numbers support it.

    --
    A polar bear is a cartesian bear after a coordinate transform.
  5. Re:Proving once again... by nuttycom · · Score: 5, Interesting

    That the founders of the United States were geniuses... or lucky bastards.

    Had they truly been geniuses in the sense you suggest, they'd have specified the algorithm for determination of the copyright period, instead of just the value.

    I've often wished that the founders of the states had been smart enough to describe an apolitical algorithm for determination of the boundaries for congressional districts as well. Or had been smart enough to realize that plurality voting systems (instead of ranked or condorcet methods) would ultimately result in the creation of an entrenched two-party duopoly from which there appears to be no escape.