I think the central “drawing balls from an urn” metaphor implies a more deterministic situation than that which we are actually in – that is, it implies that if technological progress continues, if we keep drawing balls from the urn, then at some point we will draw a black ball, and so civilizational devastation is basically inevitable. (Note that Nick Bostrom isn’t actually saying this, but it’s an easy conclusion to draw from the simplified metaphor). I’m worried that taking this metaphor at face value will turn people towards broadly restricting scientific development more than is necessarily warranted.
I offer a modification of the metaphor that relates to differential technological development. (In the middle of the paper, Bostrom already proposes a few modifications of the metaphor based on differential technological development, but not the following one). Whenever we draw a ball out of the urn, it affects the color of the other balls remaining in the urn. Importantly, some of the white balls we draw out of the urn (e.g., defensive technologies) lighten the color of any grey/black balls left in the run. A concrete example of this would be the summation of the advances in medicine over the past century, which have lowered the risk of a human-caused global pandemic. Therefore, continuing to draw balls out of the urn doesn’t inevitably lead to civilizational disaster – as long as we can be sufficiently discriminate towards those white balls which have a risk-lowering effect.
I think the central “drawing balls from an urn” metaphor implies a more deterministic situation than that which we are actually in – that is, it implies that if technological progress continues, if we keep drawing balls from the urn, then at some point we will draw a black ball, and so civilizational devastation is basically inevitable. (Note that Nick Bostrom isn’t actually saying this, but it’s an easy conclusion to draw from the simplified metaphor). I’m worried that taking this metaphor at face value will turn people towards broadly restricting scientific development more than is necessarily warranted.
I offer a modification of the metaphor that relates to differential technological development. (In the middle of the paper, Bostrom already proposes a few modifications of the metaphor based on differential technological development, but not the following one). Whenever we draw a ball out of the urn, it affects the color of the other balls remaining in the urn. Importantly, some of the white balls we draw out of the urn (e.g., defensive technologies) lighten the color of any grey/black balls left in the run. A concrete example of this would be the summation of the advances in medicine over the past century, which have lowered the risk of a human-caused global pandemic. Therefore, continuing to draw balls out of the urn doesn’t inevitably lead to civilizational disaster – as long as we can be sufficiently discriminate towards those white balls which have a risk-lowering effect.