During a recent discussion with komponisto about why my fellow LWers are so interested in the Amanda Knox case, his answers made me realize that I had been asking the wrong question. After all, feeling interest or even outrage after seeing a possible case of injustice seems quite natural, so perhaps a better question to ask is why am I so uninterested in the case.
Reflecting upon that, it appears that I've been doing something like Eliezer's "Shut Up and Multiply", except in reverse. Both of us noticed the obvious craziness of scope insensitivity and tried to make our emotions work more rationally. But whereas he decided to multiply his concern for individuals human beings by the population size to an enormous concern for humanity as a whole, I did the opposite. I noticed that my concern for humanity is limited, and therefore decided that it's crazy to care much about random individuals that I happen to come across. (Although I probably haven't consciously thought about it in this way until now.)
The weird thing is that both of these emotional self-modification strategies seem to have worked, at least to a great extent. Eliezer has devoted his life to improving the lot of humanity, and I've managed to pass up news and discussions about Amanda Knox without a second thought. It can't be the case that both of these ways to change how our emotions work are the right thing to do, but the apparent symmetry between them seems hard to break.
What ethical principles can we use to decide between "Shut Up and Multiply" and "Shut Up and Divide"? Why should we derive our values from our native emotional responses to seeing individual suffering, and not from the equally human paucity of response at seeing large portions of humanity suffer in aggregate? Or should we just keep our scope insensitivity, like our boredom?
And an interesting meta-question arises here as well: how much of what we think our values are, is actually the result of not thinking things through, and not realizing the implications and symmetries that exist? And if many of our values are just the result of cognitive errors or limitations, have we lived with them long enough that they've become an essential part of us?
I agree. I'm not even sure if there are hard-to-explain methods for that price.
If you were really going to do it you'd want to figure out a lot more about the details (like where to direct the money to maximize the goodness of the outcome in a way that was intelligible to people, and whether ads of the sort proposed could really generate the predicted amount).
But the numbers you ended up with could be plugged into the text without changing the emotional impact. The pitch is aimed at people's sense of "making a difference" and "belonging to a community" and "being heard" and so on, not at their excitement for dollar-efficient charity. The stated problem was the difficulty of pressing the right buttons in a compact and readable way that would (hopefully) get viral traction.
The numbers just have to be enough to feel like they matter for the text to be sufficient. The emotional impact of "Half a million..." versus "100 million" is probably not large, even if the real world impact is 200 times less. This is (if I understand correctly) the whole point of the "shut up and multiply" slogan in this community - recognition of our lack of cognitive sensitivity to numerical differences.
But that is part of what I meant about the fact that its really not money "out of nothing". Watching a single ad costs you something. Equally, a trillion ad impressions is a lot of cost to impose on people's minds. At some point, the damage to CL and the world might really be worse than the number of lives saved.
It's not clear to me that the relative impacts could even be worked out in advance... if ads were put up according to the whims of the passionate few, the money ended up in dumb places, there was a backlash and CL's functioning as an institution people can trust was damaged, and the world economy had X amount of value destroyed thereby, then the whole thing might be a net negative. The damage to CL's reputation with people who didn't understand why the ads had suddenly appeared might have to be monitored in real time rather than predicted in advance.
But assuming there was an honestly great thing to be gained that was really blocked by nothing more than a bit of text... well... there was some text to work as the first draft :-)
Anna Salamon gives an estimate for lives the SIAI can save per dollar in this talk: http://vimeo.com/7397629