Weighing The Benefits And Costs Of DRM: Type I & Type II Errors
from the letting-in-too-much-or-not-enough dept
In Germany, the system is much more open -- there are no barriers, and no one may ever check your ticket. However, every so often tickets do get checked (somewhat randomly), at which point you would get fined for not having the proper ticket. This minimizes a different type of error -- where someone who has paid and has a legitimate ticket has trouble getting through a gate. In other words, it's minimizing Type I errors (blocking someone from getting on the train when they should be on the train). It also lowers many of those other costs (or takes them away entirely). Of course, the "cost" to such a system is that, obviously, some number will game the system and ride without paying (a Type II error).
I think one of the problems that people have in discussing DRM is that they only look at one type of error, and never bother to compare the two. As a result of that, those who support strong DRM tend to focus only on the "error" of letting people get a "free ride," and ignore all of the collateral damage, as Phipps explains. Yet, when you compare the two, it's difficult to see how one can argue that the "free ride" problem is worse than the problem of collateral damage from limiting legitimate uses. And that is why so many people have such problems with DRM. It's not that we want a "free ride." It's that we worry about the costs associated with all of those collateral damage points.