r/DecisionTheory
3k members
r/DecisionTheory is a subreddit with 3k members. The most common kinds of discussions are news and advice requests, and the community frequently discusses decision, decision making, bayesian, optimization, and theory.
Statistical decision theory and utility theory.
Popular Themes in r/DecisionTheory
#1
News
: ""Taking the Human Out of the Loop: A Review of Bayesian Optimization", Shahriari et al 2015"
35 posts
#2
Advice Requests
: "New to decision theory. Where should I start?"
11 posts
#3
Ideas
: "The Happiness Code - A new approach to self-improvement is taking off in Silicon Valley: cold, hard rationality."
4 posts
#4
Solution Requests
: "Beta testers for Decision Matrix software needed"
2 posts
#5
Pain & Anger
: ""Jeep problem", Wikipedia (older desert-related variants on the rocket equation)"
1 post
#6
Money Talk
: ""The cost of information acquisition by natural selection", McGee et al 2022"
1 post
Popular Topics in r/DecisionTheory
#1
Decision
: ""The geometry of Decision-making in individuals and collectives", Sridhar et al 2021 (choosing by repeated binary choices)"
34 posts
#2
Decision Making
: ""Decision Making Under Uncertainty with POMDPs.jl: How to build and solve Decision Making problems using the POMDPs.jl ecosystem of packages" (Julia Academy online course)"
16 posts
#3
Bayesian
: "Pure Bayesianism vs Newcomb's Paradox"
10 posts
#4
Optimization
: ""Introduction to Linear Programming in Python: Mathematical Optimization with Google OR-Tools""
10 posts
#5
Theory
: "From Theory to practice"
7 posts
#6
Probability
: "What is the state of the art of eliciting Probability distributions and utility functions?"
6 posts
#7
Forecasting
: ""Reciprocal Scoring: A Method for Forecasting Unanswerable Questions", Karger et al 2021 (Good Judgment Project variant on Keynesian beauty contest/Bayesian truth serum)"
6 posts
#8
Decision Making
6 posts
#9
Machine Learning
: ""Meaningless comparisons lead to false optimism in medical Machine Learning", DeMasi et al 2017"
5 posts
#10
Learning
: "MEMORIZE: a randomized review algorithm derived using principles from control theory ["Enhancing human Learning via spaced repetition optimization", Tabibian et al 2019]"
5 posts
Flair Used in r/DecisionTheory
#1
Psych, Paper
: ""Relationship foraging: Does time spent searching predict relationship length?", Cohen & Todd 2018"
13 posts
#2
Econ
: ""Fat tails discourage compromise""
9 posts
#3
Phi
: ""Decisions are not about changing the world, they are about learning what world you live in""
7 posts
#4
Psych
: ""Harder choices matter less""
6 posts
#5
Soft
: ""Introduction to Linear Programming in Python: Mathematical optimization with Google OR-Tools""
5 posts
#6
Psych, RL, Paper
: ""Optimal policy for multi-alternative decisions", Tajima et al 2019"
5 posts
#7
Bayes, Psych, Paper
: ""In contrast to less-is-more claims, ignoring information is rarely, if ever optimal" [heuristics & improper models may derive superiority from being crude ways to encode informative priors]"
5 posts
#8
Psych, Econ, Paper
: ""Decisions under Risk Are Decisions under Complexity", Oprea 2024 (behavioral economics biases might be because people are dumb, not irrational)"
4 posts
#9
Econ, Psych, Paper
: ""Behavioral Implications of Causal Misperceptions", Spiegler 2020"
4 posts
#10
Bayes, Econ, Paper
: ""Robust Decision Theory and Econometrics", Chamberlain 2020"
3 posts
Member Growth in r/DecisionTheory
Yearly
+364 members(12.3%)
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Last updated: June 16, 2026