How to knowwhich design wins,without fallingfor luck

01·Where you are now

Could the problem be something other than the design? Every time you look at the numbers mid-test and ask “who is winning?”, you give luck another chance to win.

The statistician Evan Miller simulated a test between two identical versions. When the result was checked after every visitor, and the test stopped the first time it looked “significant”, meaning not a fluke, 26.1% of the tests declared a winner. Without peeking, the chance of that mistake is 5%.

So you move the whole budget to B, and a month later everything is back where it was. There was no win. There was a lucky streak.

02·Who's talking to you: Axel Jedlitschka

I bought a marketing course and started marketing someone else's digital product. I ran a Facebook ad for a sales page, and that is where I learned to write copy, to market, and the principles of marketing and distribution.

Later, in a job booking sales meetings by phone, I started building systems and automations, processes that run on their own, for business owners. I built a system for business forecast analysis, and it served the company's marketing and sales very well. And which design works better for you, no study can answer. The people your ads bring can.

Axel Jedlitschka

04·There is a way

The fix is simple, if not comfortable: decide in advance how many visitors you need, run until you reach that number, and read the result once. Your AI agent, the software that does work for you on the computer, takes you through it in four steps.

1. 01Hypothesis.One sentence: if we change X, more visitors will leave their details, because Y. Plus one metric, fixed right now, for example leads divided by visitors.
2. 02Two versions, one idea.A is the current design, B is the challenger. The offer, the form, the price and the ad are identical. The change has to be big, like a new layout or a new promise in the headline. A button color will not move the number enough.
3. 03Sample size.The agent runs a calculator with your page's real conversion rate, meaning how many of your visitors leave their details. It gets the visitors each version needs and the weeks that takes, and all of it goes on a “test card”.
4. 04Split the ads, read once.The experiment tool in Meta or Google splits the audience at random, so each person sees only one version. When both versions pass the planned number, the agent reads the result once and reports the verdict as it is.

Looking in the middle is fine. Stopping or switching because of what you saw is not.

What you get

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Questions?