I’m going to make an argument in this talk that dissent is valuable not merely to establish your moral dimension or to make a moral act or moral posture. It’s essential to scientific progress. So we can’t do without dissent; it’s not an affectation.
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Solar geoengineering rests on a simple idea that it is technically possible to make the Earth a little more reflective so that it absorbs a little less sunlight, which would partly counteract some of the risks that come from accumulating carbon dioxide in the atmosphere. When I say technically possible, it appears that at least doing this in a crude way is actually easy, in the sense that it could be done with commercial off-the-shelf technologies now, and it could be done at a cost that is really trivial, sort of a part in a thousand or a part in ten thousand of global GDP.
As we dug into this topic, we realized research gets forbidden for all sorts of reasons. We’re going to talk about topics today that are forbidden in some sense because they’re so big, they’re so consequential, that it’s extremely difficult for anyone to think about who should actually have the right to make this decision. We’re going to talk about some topics that end up being off the table, that end up being forbidden, because they’re kind of icky. They’re really uncomfortable. And frankly, if you make it through this day without something making you uncomfortable, we did something wrong in planning this event.
Talking to people who study the history of science, and you look at Nobel Prize winners, many of them have really taken sort of career-threatening risks in order to win Nobel Prizes. So even science, which feels like an area where you’re supposed to question authority and think for yourself, you actually have to be rather risk-taking and disobedient.
One of the most recent paradigms that we’ve used to try to get this under experimental control is to ask people to act out pretend harmful actions. So for instance, we’ll give them a disabled handgun. We’ll show them that it’s fake. That it couldn’t possibly harm a fly. We put it in their hands and then we ask them to shoot us in the head.
Some of my artist friends think what I’m doing isn’t art, and I’ve given up on art. It’ll take care of itself. You know. I mean it’s always been there, it will always be there, and we always know that new art never looks like art at first, ever. So why should this be any different? We just have to trust the process. And I would say that must be true for every other discipline.
Over the past century, we’ve been to the moon, we’ve split the atom, we’ve sequenced the human genome, but were still only at the very beginning of our understanding of the human brain. This is one of the great challenges that we face. If we can understand the brain, we can develop better treatments for brain disorders, we can design better robots, better computers, and ultimately we can better understand ourselves.