A list, unfinished and unordered.
Finance & Economics #
- Angel investing
- Microeconomics
- Market microstructure
- Prediction markets
- Derivatives trading
- Risk modeling
- Energy markets
- Space launch economics
- Corporate finance & capital structure
- Venture financing (termsheets, SAFEs, preferred stock)
- Financial accounting for startups
- Payments & settlement systems
- Financial regulation (KYC/AML, securities law)
- Tax optimization
- Negotiation theory & practice
AI & Machine Learning #
- Game RL agents
- AI alignment
- Distributed training
- Spatial understanding
- Training LLMs
- LLM inference
- Robot VLAs
- Diffusion models
- Representation learning
- Sequence modeling (SSMs, RWKV, state-space variants)
- World models
- Multi-agent RL
- Causal inference
- Mechanistic interp
- LLM compression & distillation
- Retrieval (vector DBs, graph-based search, HNSW)
Bio & Neuro #
- BCIs
- Protein folding
- Synthetic biology
- Gain of function viruses
- Gene therapy and CRISPR
- Deep-sea ecosystems
- Algae farming
- Fermentation science
- Cellular & systems neuro (spiking models, population codes)
- Connectomics & network models of brains
- Biophysics of neurons & ion channels
- Neuroimaging (EEG, MEG, fMRI, calcium)
- Lab techniques (molecular bio, cell cultures, CRISPR wet labs)
- Synthetic gene circuits & genetic regulatory networks
- Metabolic engineering & industrial biotech
- Biostatistics
- Organoid computing
- Neuromorphic hardware
Computer Science & Mathematics #
- Sparse matrix theory
- Topological data analysis
- Complexity theory
- Dynamical systems & chaos
- Formal verification, proof assistants, and LEAN
- Tigerbeetle internals
- Memory allocator design
- Compression algorithms
- Information geometry
- Real analysis & measure theory
- Functional analysis
- Probability & stochastic processes
- Information theory
- Numerical optimization
- Graph theory & network science
- Homotopy & algebraic topology
- Category theory
- Optimal transport
- Operating systems (scheduling, virtual memory, syscalls)
- Computer architecture (pipelines, caches, vector units, NUMA)
- GPU arch
- SIMD, lock-free, cache-aware algos
- Databases (LSM trees, MVCC, query planners, OLAP)
- Networking (read beej's guide)
- Observability & SRE (tracing, metrics, SLIs/SLOs, incident response)
- Time-series systems & event streams
Robotics & Control Systems #
- PID controllers
- Robot kinematics
- Signal processing
- Soft robotics
- State estimation & filtering (Kalman, particle filters)
- SLAM
- Motion planning
- Model predictive control
- Legged locomotion & whole-body control
- Human-robot interaction
Philosophy & Theory #
- Philosophy of science, epistemology, logic, mathematics, mind, language, and artificial intelligence
- Hegel
- Kant
- Game theory
History & Law #
- Chinese history
- Forms of government
- History of Wall Street
- Geopolitics
- Roman legal theory
- Maritime law
Transportation & Space #
- Self-driving cars
- Air traffic control
Security & Cryptography #
- ZK proofs
- Modern symmetrics/asymmetric crypto
- Secure multiparty computation (+ FHE)
- Hardware security (sidechannels, SGX/TEE, Rowhammer)
- Binary exploitation, sandbox escapes
- Protocol design & formal analysis (Signal)
- Auth & identity systems (OAuth, OIDC)
Energy, Climate, Materials #
- Tokamak plasma physics
- Power systems engineering (grids, transmission, frequency control)
- Batteries & electrochemistry
- Heat engines & thermodynamic cycles
- Carbon capture
- Materials science basics (phase diagrams, defects, nanostructures)
- Nuclear engineering (fission reactors, fusion confinement)
Hardware & Electronics #
- Analog & digital circuit design
- Embedded systems (MCUs, RTOS)
- High-speed digital design (signal integrity, PCBs)
- Sensor fusion hardware (IMUs, depth, cameras)
- RF (antennas, wireless protocols)
Social Science & Behavior #
- Behavioral economics
- Cognitive biases
- Organizational design & incentive arch
- Institutional economics & state capacity
- Finding and hiring talent
Graphics & Media #
- Computer graphics
- Audio codecs
- Digital cartography
- Vocaloid
Natural Sciences #
- Meteorology fundamentals
- Nonlinear dynamics
Architecture & Design #
- Gothic architecture
- Interaction design
- Visual hierarchy & typography
- Motion design
- Sound design
- Color science
Language & Culture #
- Japanese
- Narrative design & story structure
- Historical linguistics and evolution
- Translation & localization
Misc #
- Text adventure games
- Urban planning
- Supply chain management
Arts & Hobbies #
- Poi spinning