Crump et al. (2022) offer a well-argued example of an essential development: a rigorous framework for assessing sentience from the perspective of moral concern over an agent's welfare.

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• Crump et al. eight criteria for sentiencemethod0.835
  Set of eight criteria: nociception, sensory integration, integrated nociception, analgesia, motivational trade-offs, flexible self-protection, associative learning, analgesia preference.
• Developing principled sentience frameworks is an existential requirement for humanity as it encounters diverse intelligences.claim0.831
• Developing principled sentience frameworks is an existential requirement for humankindhypothesis0.820
  Levin's argument that adequate sentience assessment frameworks are necessary for responsible co-evolution with novel embodied intelligences.
• It is essential now to develop frameworks that pick out what is deep and fundamental about sentient beings – not frozen accidents of evolution on the N=1 example of the phylogenetic path of life on Earth.claim0.818
  Core prescription for future sentience frameworks.
• Eight Sentience Criteria (Crump et al.)framework0.807
  Quantitative, flexible framework for assessing sentience: nociception, sensory integration, analgesia, trade-offs, self-protection, learning, preference.
• Maturing to the point of a principled stance on sentience and agency is probably an existential requirement for humankind.concept0.807
  Load-bearing conclusion: generalized sentience frameworks are essential for ethical and survival-level reasons.
• We must develop principled approaches to evaluating the sentience of (and thus, our responsibility to) beings of unfamiliar provenance and composition.claim0.805
  Call to action for new frameworks.
• Crump Et Al Sentience Criteriaframework0.803