Dynamic programming, algorithmic and theoretical: recurrences, state space design, optimization tricks, Bellman equations, HJB, MDPs, stochastic control. Use for DP problems or building economic dynamic models.
Surface unstated assumptions before ambiguous work starts. Use when a plan is vague, a long task came back wrong, or the user asks for a blindspot pass.
Edit prose that sounds machine-written while preserving the author's meaning and voice. Use for humanize this, make this sound human, remove AI slop, a requested style audit, or a plain-English (ASD-STE100) rewrite.
First-principles ML: classical methods, optimization, Gaussian processes, deep learning, probabilistic inference, generative models, RL. Use for deriving an algorithm, implementing from scratch, or choosing a method.
Author and manage Obsidian vaults: wikilinks, callouts, embeds, properties, JSON Canvas (.canvas), Bases (.base), and the Obsidian CLI. Use when creating or editing notes in a vault.
Format informal requests into structured prompts, then execute them. Use when given a conversational or dictated request that needs structuring before execution.
Modern R (4.4+) for tidyverse, package development, testthat, brms, ggplot2, and fixest. Use when writing or debugging .R/.Rmd/.qmd or porting Stata to R.
Fit and diagnose statistical models in Python (statsmodels): hypothesis tests, regression, GLM, time series, Bayesian, power analysis, effect sizes, APA reporting.
PhD-level macroeconomic theory: growth, business cycles, New Keynesian models, monetary and fiscal policy, asset pricing, heterogeneous agents. Use when deriving macro results or working through problem sets.
Solve, derive, explain, and check mathematics using the supplied books and algebraic geometry notes. Use for proofs, real analysis, linear algebra, multivariable calculus, convexity, constrained optimization, differential and difference equations, algebraic geometry, and numerical solutions of polynomial systems.
Chicago price theory lens for brainstorming economics research ideas. Invoke during scientific brainstorming to inject rigorous microeconomic reasoning from the Jaffe-Minton-Mulligan-Murphy tradition.
Raise the general-interest ceiling of an economics or finance paper toward a top-5 submission. Use when reframing an abstract or intro, or testing if the question is big enough.
Draft or rewrite the model, theory, or framework section of an economics paper. Use when it is dense, over-notated, or needs cutting. NOT for identification or the intro.
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