Someone once asked me, “How many visitors do I need to determine the validity of my split-testing?” For example, if you’re split-testing two different headlines, how much traffic do you need to make a good judgment call on which headline is the real winner?

That’s an interesting question, and one with no real answer, other than “a lot.” And there’s a specific reason why…

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After the launch of our new automated split-testing software, controversy soon followed.

Most of it was caused by the math behind it (which is complex and understandably hard to grasp for most people), or by competitors spreading misinformation.

So people were either confused by it or misunderstood it.

For example, some people posted in popular forums that my copy for MutiTrackGenerator.com is misleading because it’s not pure Taguchi.

(Well, technically, they’re right.)

Here’s why.

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Hold on tight.

On Thursday night, I will be on a conference call with Armand Morin and Marc Quarles in preparation for the launch of a new product so revolutionary, it’s going to completely change the way you look at copywriting for the web, write your copy, split-test your copy and optimize it.

And no, it’s not “Video Generator.”

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This is a reprint from my last newsletter issue. But so many people loved it and appreciated it, I decided to reprint it here.

First of all, I’m not a mathematician. And Dr. Genichi Taguchi’s work specifically relates to the manufacturing industry, particularly cars. Not direct marketing. His formulas were only recently extrapolated to the direct marketing and advertising industries, in the area of split-testing.

So my answer will be limited to split-testing alone. I’m going to attempt to explain this in layman’s terms and as best as I can. I hope not to lose you along the way… Fingers crossed.

What it is, is this…

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