1. ‘Possibilian’ is David Eagleman’s term for a stance between the certainties of theism and atheism—an openness to multiple, testable ‘maybes’ about ultimate questions (afterlife, divinity, cosmology). See Eagleman’s essay ‘Why I Am a Possibilian’ (New Scientist, 2010), the New Yorker profile ‘The Possibilian’ (2011), and possibilian.com. Note that Eagleman’s usage leans toward metaphysical/religious inquiry (e.g., Sum’s forty speculative afterlives) rather than a general innovation methodology.