Running notebook for NUS TCX2005 Information Systems, Management and Organisations. Foundations of IS, CPSD vs IPOF, three dimensions, complementary assets, and Prakash's adopter-centric trap. Doubles as exam-ready reference for the open-book Examplify final.
Exam-ready reference for NUS TCX2003 Database Systems & Management: MySQL types, constraints, ER design, normalization gotchas. Flipped classroom with Prof Jiang Kan.
A research note on network effects: why a network's value grows roughly with the square of its users, why n log n is closer to the truth than n squared, the tipping point of critical mass, the adoption S-curve, and why all of it becomes a barrier to entry.
A research note on the build-versus-buy decision: the fixed-versus-recurring cost crossover that sets the break-even horizon, why cost alone never decides it, and the NUS LMS story as a worked case.
A research note on ergodicity: why a coin flip with a positive expected value still sends every individual player broke, the gap between the time average and the ensemble average, the volatility drag, and how this is the deeper why beneath the Kelly criterion.
A research note on marginal cost and economies of scale: why the hundredth unit costs less than the first, the difference between marginal and average cost, where the zero-marginal-cost economy comes from, the textbook U-shaped cost curve, and why rational decisions ignore sunk costs.
lioncity beatbox championship lit something back up, Stitch showed me style isnt something you find but a willingness to keep exploring, and thats the spirit ive been missing
A research note on the Kelly criterion: where the formula comes from, why betting twice Kelly earns you nothing, the drawdown maths of fractional Kelly, and why full Kelly is unusable in real markets.
Acting on a long-held urge to teach: I finally started posting on 小红书, got my first real coaching sign-ups, and traced it all back to Marcus, the friend who coached me for three years.
I nearly added a second memory tool to my AI coding agent, then asked two questions - where the AI compression runs, and whether the store is portable - and decided not to switch.