The best Complexity Science newsletters

Long-form essays by a researcher exploring complexity, quantum foundations, and the epistemology of religious experience. Readers get rigorous, illustrated frameworks and explicit testable claims rather than news or summaries.

A research lab's newsletter presenting essays on 'symbients', symbiotic relationships between humans and non-human computational agents, and on the physical and computational limits that shape possible AI paths. Readers get speculative theory with references to art-science projects, thermodynamics, information theory and constructor theory.