I am a researcher at Rethink Priorities’ Worldview Investigations Team. I also do work for Oxford’s Global Priorities Institute. Previously I was a research analyst at the Forethought Foundation for Global Priorities Research. I took the role after completing the MPhil in Economics at Oxford University. Before that, I studied Mathematics and Philosophy at the University of St Andrews.
Find out more about me here.
Hi Oscar, thanks. Yes! Indicator evidence is inserted at the bottom and flows upward. The diagram priors flows down to set expectations, so it’s a common convention to draw it so. Informally you see it as each node splitting different nodes into subnodes, but the arrows don’t mean to imply that information doesn’t travel up.
On to your main point: there’s no question that this is a preparadigmatic field where progress and consensus are difficult to find, and rightly so given the state of the evidence.
A few thoughts on why pursue this research now despite the uncertainty:
First, we want a framework in place that can help transition towards a more paradigmatic science of digital minds as the field progresses. Even if you’re sceptical about current reliability, we think that having a model that can modularly incorporate new evidence and judgements could serve as valuable infrastructure for organising future findings.
Second, whilst which theory is true remains uncertain, we found that operationalising specific stances was often less fuzzy than expected. Many theories make fairly specific predictions about conscious versus non-conscious systems, giving us firmer ground for stance-by-stance analysis. (Though you might still disagree with any given stance, of course!)
Your concern about theory quality might itself be worth modelling as a stance—we thought of something like “Stance X” but it could be “Theoretical Scepticism”—where all features provide very weak support. That would yield small updates from the prior regardless of the system. Already, you can see the uncertainty playing out in the model: notice how wide the bands are for chickens vs humans (Figure 3). Several theories disagree substantially about animal consciousness, which arguably reflects concerns about theory quality.
That said, we’re deliberately cautious about making pronouncements on consciousness probability or evidence strength. We see this as a promising way to start characterising these values rather than offering definitive answers.
(Oh and regarding priors: setting them is hard, and robustness important. it might be helpful to see Appendix E and Figures 9-11. The key finding is that while absolute posteriors are highly prior-dependent (as you’d expect), the comparative results and direction of updating are pretty robust across priors.)