Academy/Research Engineering/Experiment design
module 1 of 6 · 35 min

Experiment design

Turn a vague idea into a falsifiable test with a baseline and explicit evidence standard.

Explain Experiment design clearlyImplement a small Experiment design exampleEvaluate whether Experiment design improves a simpler baselineIdentify failure cases and operational constraints
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mental model

start with the idea before the implementation.

A good experiment can fail and still teach you something because the hypothesis and measurements were defined first.
core concepts

the mechanisms you need to reason about.

01

Hypothesis

Hypothesis is studied through intuition implementation evidence and trade-offs. The goal is to be able to explain the mechanism and verify it with a concrete test rather than only repeat a definition.

02

Baseline

Baseline is studied through intuition implementation evidence and trade-offs. The goal is to be able to explain the mechanism and verify it with a concrete test rather than only repeat a definition.

03

Control

Control is studied through intuition implementation evidence and trade-offs. The goal is to be able to explain the mechanism and verify it with a concrete test rather than only repeat a definition.

04

Metrics

Metrics is studied through intuition implementation evidence and trade-offs. The goal is to be able to explain the mechanism and verify it with a concrete test rather than only repeat a definition.

05

Confounders

Confounders is studied through intuition implementation evidence and trade-offs. The goal is to be able to explain the mechanism and verify it with a concrete test rather than only repeat a definition.

engineering lab

turn the lesson into evidence.

LAB 1

write a falsifiable hypothesis

Build the smallest version first. Record the input, expected output, measured result and one failure you discovered.

LAB 2

define a baseline

Build the smallest version first. Record the input, expected output, measured result and one failure you discovered.

LAB 3

pre-register metrics

Build the smallest version first. Record the input, expected output, measured result and one failure you discovered.

knowledge checks

prove you can explain and decide.

1

identify confounders

ask cortex to test me →
2

state rejection criteria

ask cortex to test me →
3

separate exploratory and confirmatory work

ask cortex to test me →
failure modes

what usually goes wrong.

risk

moving goalposts

Detect this early by defining a baseline, a measurable signal and a condition that would cause you to stop or redesign the approach.

risk

no baseline

Detect this early by defining a baseline, a measurable signal and a condition that would cause you to stop or redesign the approach.

risk

selective reporting

Detect this early by defining a baseline, a measurable signal and a condition that would cause you to stop or redesign the approach.

proof of learning

Create a short Experiment design engineering note with one working artifact one metric one failure case and one decision about when you would or would not use it.

Save the result in your portfolio or project repository. A strong learning artifact should make your assumptions, metrics and failure analysis visible.