A/B Testing: The Data Dictator

THE BRUTAL REALITY: YOUR OPINION IS IRRELEVANT

In a high-growth company, the CEO's "gut feeling" is the enemy of progress.

The Conflict: Humans are terrible at predicting what users want. We fall in love with our own bad ideas.

The Truth: A/B testing is a battle between two versions of reality. The data is the only judge.

The Fix: Kill your darlings. If Version B increases conversion by 0.5%, Version A is dead. No arguments.

1. VELOCITY OVER ACCURACY

The company that runs the most experiments wins. Don't wait 4 weeks for a "perfect" test. Run 10 "messy" tests a week. Even a failed test is a victory because it tells you exactly what *not* to do next time.

2. THE BIG ROCKS

Don't waste time testing the color of a button. Test the Offer, the Price, and the Headline. Changing a color gives a 1% lift. Changing an offer can give a 300% lift.

SMART WORDS

A/B TESTING

The "Duel." Comparing two versions of a page to determine which one wins in the real world.

STATISTICAL SIGNIFICANCE

The "Certainty." The mathematical proof that a result wasn't just a lucky coincidence.

CONTROL GROUP

The "Baseline." The group that sees the original version of the product.

TACTICAL DIRECTIVES

1. The Headline Test: Start an A/B test on your primary landing page headline by the end of the day.

2. The Goal: Commit to running at least 3 experiments per week, every week.

3. The Failure Log: Keep a public log of every failed test. Document the lesson learned so you don't repeat the mistake.