EXEMPLAR PROBLEMS
(not actual Berkeley 100 Challenges)

Michael Scharff Michael Scharff

Physics & Applied Physics - Unified Quantum Gravity Theory

Problem Statement: Formulate a mathematically consistent theory that unifies quantum mechanics and general relativity, making testable predictions regarding quantum gravitational phenomena.

Why This Exemplifies the Field: This addresses the central incompatibility between our two most successful physical theories and represents the holy grail of theoretical physics that would fundamentally transform our understanding of spacetime, black holes, and the early universe.

Evaluation Criteria:

  • Mathematical consistency without singularities or infinities

  • Reproduces general relativity in appropriate limits

  • Reproduces quantum field theory in appropriate limits

  • Makes at least three new, testable predictions distinct from existing theories

  • Theoretical framework published and peer-reviewed

  • At least one experimental verification of a novel prediction

Feasibility Assessment: Extremely challenging, likely 20-30 years minimum. Requires conceptual breakthroughs in understanding spacetime emergence, innovative mathematical frameworks, and new experimental approaches for testing quantum gravity effects. May be contingent on advancements in string theory, loop quantum gravity, or entirely new approaches.

Impact on the Field: Would represent one of the greatest achievements in theoretical physics, resolving the central incompatibility between our two most successful physical theories. Would transform our understanding of black holes, the early universe, and potentially reveal new phenomena at the Planck scale.

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Ulrika Andersson Ulrika Andersson

Mathematics & Applied Mathematics - Riemann Hypothesis

Problem Statement: Prove or disprove the Riemann Hypothesis, which states that all non-trivial zeros of the Riemann zeta function have real part equal to 1/2.

Why This Exemplifies the Field: This 160+ year old problem is considered the most important unsolved problem in mathematics, with profound implications for prime number theory and connections to physics, making it the archetypal example of deep mathematical inquiry.

Evaluation Criteria:

  • Complete mathematical proof published in peer-reviewed journal(s)

  • Verification by multiple independent mathematical review committees

  • Proof accepted by consensus among experts in number theory and analysis

  • Clarification of connections to prime number theory

  • If proven true, classification of all exceptions if any exist

  • Broad implications for related conjectures and number theory clearly established

Feasibility Assessment: Extremely challenging, potentially requiring 10-30 years. Despite over 160 years of attempts, a proof remains elusive. Likely requires novel connections between different branches of mathematics. Recent advancements in analytical techniques and computational verification provide some optimism.

Impact on the Field: Would resolve one of the most significant open problems in mathematics with profound implications for prime number theory, cryptography, and quantum chaos. Would enable new classes of mathematical proofs that rely on the hypothesis and provide deeper understanding of the distribution of prime numbers.

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Ulrika Andersson Ulrika Andersson

Computation & AI - Computational Complexity of Neural Networks

Problem Statement: Develop a comprehensive theoretical framework characterizing the computational complexity, approximation capabilities, and optimization landscape of neural networks, explaining why deep learning works, when it fails, and providing principled design guidelines.

Why This Exemplifies the Field: This addresses the fundamental gap between the empirical success of deep learning and our theoretical understanding, representing the core challenge of making AI a mathematically rigorous science rather than an empirical art.

Evaluation Criteria:

  • Rigorous mathematical characterization of expressivity vs. network architecture

  • Proof of computational complexity bounds for training and inference

  • Theoretical explanation for empirical phenomena like double descent

  • Precise characterization of optimization landscape and training dynamics

  • Mathematically justified architecture design principles validated on benchmark tasks

  • Theory that accurately predicts generalization performance on novel architectures

Feasibility Assessment: Very challenging, likely requiring 10-20 years. Current understanding is largely empirical with fragmented theoretical insights. Requires synthesis across statistical learning theory, differential geometry, and dynamical systems. May need entirely new mathematical tools for analyzing high-dimensional non-convex optimization.

Impact on the Field: Would transform deep learning from an empirical discipline to one with solid theoretical foundations. Would enable systematic architecture design rather than trial-and-error approaches. Would clarify fundamental limits of neural computation and guide research toward promising new paradigms when appropriate.

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Ulrika Andersson Ulrika Andersson

Astronomy, Astrophysics & Cosmology - Dark Energy Characterization

Problem Statement: Determine the fundamental nature of dark energy, characterizing its equation of state, evolution over cosmic time, and interaction with other components of the universe, explaining the observed accelerating expansion.

Why This Exemplifies the Field: Dark energy comprises ~68% of the universe's content yet remains completely mysterious, representing the greatest puzzle in modern cosmology and potentially requiring new fundamental physics.

Evaluation Criteria:

  • Mathematical model consistent with all observational data to within 1σ uncertainty

  • Precise measurement of dark energy equation of state parameter w and its evolution

  • Constraints on alternative theories that can be experimentally differentiated

  • Predictions for future observations that can further validate the model

  • Reconciliation with quantum field theory without fine-tuning problems

  • Independent confirmation through at least three different observational methods

Feasibility Assessment: Extremely challenging, likely requiring 15-25 years. Depends on next-generation observational facilities like the Vera C. Rubin Observatory, Euclid, and Roman Space Telescope. Requires advances in theoretical cosmology and possibly new approaches to quantum gravity. Progress in understanding vacuum energy in quantum field theory would be an important precursor.

Impact on the Field: Would resolve one of the greatest mysteries in modern physics, explaining approximately 68% of the universe's energy content. Would transform our understanding of cosmic evolution and potentially reveal new fundamental physics beyond the standard model. May have profound implications for the ultimate fate of the universe.

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Michael Scharff Michael Scharff

Earth, Space & Environmental Sciences - Earthquake Prediction System

Problem Statement: Develop a reliable earthquake prediction system capable of forecasting the location, timing, and magnitude of major earthquakes (Mw ≥ 6.0) with sufficient precision and lead time to enable effective preparedness and response actions.

Why This Exemplifies the Field: This represents the ultimate test of our understanding of solid Earth dynamics and complex systems, addressing a challenge that has eluded scientists for decades despite enormous societal importance.

Evaluation Criteria:

  • Demonstrated ability to predict earthquakes of Mw ≥ 6.0 with at least 80% success rate

  • Location accuracy within 50 km radius

  • Timing accuracy within a window of 2 weeks or less

  • Magnitude accuracy within ±0.5 Mw

  • Lead time of at least 2 weeks for meaningful preparedness

  • False positive rate below 20%

  • Validation across at least three distinct tectonic settings

Feasibility Assessment: Extremely challenging, likely requiring 15-25 years. Requires significant advances in understanding precursor phenomena, crustal stress monitoring, and complex systems modeling. Progress in satellite geodesy, deep borehole instrumentation, machine learning for pattern recognition in geophysical data, and physics-based crustal deformation models would be important precursors.

Impact on the Field: Would transform earthquake science from predominantly retrospective analysis to predictive capability. Would revolutionize disaster risk reduction in seismic regions worldwide. May reveal fundamental insights into crustal mechanics and the earthquake nucleation process with implications for understanding other geophysical phenomena.

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Michael Scharff Michael Scharff

Chemistry & Chemical Engineering - Universal Chemical Synthesis Machine

Problem Statement: Create a fully automated synthesis platform capable of planning and executing the synthesis of virtually any organic molecule without human intervention, from commonly available starting materials, with efficiency comparable to expert human chemists.

Why This Exemplifies the Field: This would represent the culmination of chemical synthesis methodology, requiring integration of all aspects of chemistry from reaction mechanisms to process engineering, fundamentally transforming how chemistry is practiced.

Evaluation Criteria:

  • Ability to synthesize compounds from multiple structural classes

  • Success rate >90% for molecules of pharmaceutical complexity

  • Automated retrosynthetic planning using accessible starting materials

  • Execution of complete syntheses without human intervention

  • Synthesis efficiency (steps, yield, time) comparable to expert human chemists

  • Integration of real-time reaction monitoring and pathway optimization

  • Handling of air/moisture-sensitive reactions and diverse reaction conditions

Feasibility Assessment: Very challenging, likely requiring 10-20 years. Requires integration of artificial intelligence, robotics, and chemical expertise. Progress in machine learning for retrosynthetic analysis, flow chemistry, in-line analytics, and robust reactor designs would be important precursors.

Impact on the Field: Would revolutionize chemical synthesis, potentially democratizing access to complex molecules. Would accelerate drug discovery and materials development by removing synthetic bottlenecks. May transform chemistry education and practice by automating routine synthesis while elevating human creativity to address more complex challenges.

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Michael Scharff Michael Scharff

Biology & Biochemistry - Synthetic Minimal Cell

Problem Statement: Design and construct a synthetic minimal cell containing only the components necessary for self-replication, energy production, and environmental response, using either entirely novel components or a minimal subset of existing biological parts.

Why This Exemplifies the Field: This addresses the fundamental question "what is the minimal requirement for life?" and would demonstrate complete understanding of cellular biology while potentially revealing new principles of biological organization.

Evaluation Criteria:

  • Demonstrated self-replication over at least 10 generations

  • Complete characterization of all components (genome, proteome, metabolome)

  • Independent energy generation and material processing

  • Response to environmental signals with adaptive behaviors

  • Genetic system allowing evolution and adaptation

  • Clearly defined minimal requirements for cellular life

  • Either fully synthetic or radical simplification of existing cells

Feasibility Assessment: Extremely challenging, likely requiring 15-25 years. Two potential approaches: bottom-up (building from non-living components) or top-down (simplifying existing cells). Requires advances in synthetic biochemistry, genome design, and cellular biophysics. Progress in cell-free systems, minimal genome studies, and membrane biophysics would be important precursors.

Impact on the Field: Would transform our understanding of the fundamental requirements for cellular life. Would potentially enable programmable living systems for applications in medicine, materials, and environmental remediation. May reveal previously unrecognized design principles in biological systems with implications for understanding how life emerged.

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Michael Scharff Michael Scharff

Neuroscience & Brain Science - Consciousness Measurement Framework

Problem Statement: Develop a comprehensive theoretical and experimental framework for objectively measuring and quantifying consciousness across diverse organisms, states, and systems, establishing empirical markers that reliably indicate the presence and degree of conscious experience.

Why This Exemplifies the Field: Consciousness is the central mystery of neuroscience, and developing objective measures would transform the field from philosophical speculation to empirical science, addressing the hardest problem in neuroscience.

Evaluation Criteria:

  • Quantitative scale measuring consciousness with demonstrable validity across species

  • Objective neural signatures correlating with subjective reports in humans

  • Application to edge cases (anesthesia, minimally conscious states, non-human animals)

  • Theoretical model connecting neural activity to phenomenal experience

  • Ability to detect consciousness in systems incapable of self-report

  • Validation through multiple independent methodologies

  • Consensus acceptance from diverse theoretical perspectives in consciousness research

Feasibility Assessment: Extremely challenging, likely requiring 15-25 years. Requires integration across neuroscience, philosophy, and information theory. Progress in neural correlates of consciousness identification, integrated information theory refinement, and development of consciousness-specific biomarkers would be important precursors.

Impact on the Field: Would transform consciousness research from largely philosophical inquiry to empirical science. Would potentially resolve debates about consciousness in non-human animals and artificial systems. May provide crucial diagnostic tools for disorders of consciousness and establish ethical frameworks for treatment of potentially conscious systems.

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Michael Scharff Michael Scharff

Medicine & Health Sciences - Comprehensive Immune System Reprogramming

Problem Statement: Develop technologies to precisely reprogram the immune system, enabling reversal of autoimmunity, elimination of allergic responses, enhancement of anti-tumor immunity, and induction of tolerance to transplanted tissues with specificity and durability.

Why This Exemplifies the Field: The immune system is central to most diseases, and precise control would represent mastery over one of the body's most complex systems, potentially transforming treatment of cancer, autoimmunity, and transplantation.

Evaluation Criteria:

  • Demonstrated efficacy in at least three distinct immune disorder categories

  • Antigen-specific modulation without generalized immunosuppression

  • Durable effect (>5 years) following intervention

  • Safety profile with minimal off-target effects

  • Applicable across diverse patient populations

  • Successful translation to first-in-human clinical trials

  • Mechanistic understanding enabling prediction of response

Feasibility Assessment: Very challenging, likely requiring 10-20 years. Requires precise understanding and control of immune tolerance and activation. Progress in T cell engineering, antigen-specific therapies, regulatory T cell biology, and thymic regeneration would be important precursors.

Impact on the Field: Would transform treatment of immune-mediated diseases from management to cure. Would potentially eliminate rejection as a barrier to transplantation. May provide fundamental insights into immune system regulation with implications for infectious disease, cancer, and aging.

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Michael Scharff Michael Scharff

Material Sciences, Technology & Engineering - Atomically Precise Manufacturing

Problem Statement: Develop a manufacturing system capable of positioning atoms with sub-angstrom precision to build macroscopic structures and devices with atomic precision, operating at economically viable throughput and scale.

Why This Exemplifies the Field: This represents the ultimate goal of materials engineering - complete control over matter at the atomic scale - and would enable materials with theoretically perfect properties, fundamentally transforming manufacturing and technology.

Evaluation Criteria:

  • Positional accuracy <0.1 Å for individual atoms or molecules

  • Ability to work with at least 20 different elements across the periodic table

  • Manufacturing throughput >10⁹ atoms per second

  • Error rates <1 per 10¹² operations

  • Scalability to create structures of at least 1 mm³

  • Closed-loop verification of atomic placement accuracy

  • Demonstration of at least three functional devices impossible to create with conventional manufacturing

Feasibility Assessment: Extremely challenging, likely requiring 20-30 years. Current scanning probe techniques can position individual atoms but are far too slow for practical manufacturing. Requires revolutionary approaches to parallel manipulation of atoms. Progress in self-assembly techniques, advanced scanning probe technologies, and molecular machine design would be important precursors.

Impact on the Field: Would transform manufacturing from statistical to deterministic processes. Would enable materials with theoretically perfect properties and defect-free devices. May allow creation of metamaterials with properties not found in nature and quantum devices operating at room temperature.

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