====== Why testing headlines alone is outdated ======

===== The headline era =====

There was a time when testing headlines made sense.

Traffic was simpler.
Funnels were shorter.
Revenue was tied directly to a single page.

Change the headline.
Measure conversions.
Declare a winner.

That era is over.

CBSplit was built for systems, not headlines.

===== Headlines affect clicks, not lifecycle revenue =====

Headlines primarily influence:

  
  * Attention
  * Curiosity
  * Initial engagement
  * Front-end conversion rate

They do not directly control:

  
  * Refund behavior
  * Rebill survival
  * Subscription churn
  * Payment stability
  * Customer lifetime value

Optimizing headlines alone optimizes entry, not durability.

===== Funnels are multi-layer systems =====

Modern funnels include:

  
  * Pre-sell pages
  * External checkout platforms
  * Upsell sequences
  * Subscription billing cycles
  * Retry and recovery logic

Revenue depends on the interaction between these layers.

Headline testing isolates one surface variable.

CBSplit evaluates the entire system.

===== Headline tests ignore backend fragility =====

A headline can increase conversions while also increasing:

  
  * Impulse-driven buyers
  * Expectation mismatch
  * Refund likelihood
  * Early churn

Front-end lift may look impressive.

Backend erosion may cancel it out.

CBSplit reconciles front-end performance with backend truth.

===== Messaging alignment matters more than curiosity =====

Effective headlines should:

  
  * Attract aligned buyers
  * Set accurate expectations
  * Reflect real value
  * Support long-term retention

Curiosity-driven headlines often:

  
  * Inflate short-term clicks
  * Increase bounce or regret
  * Distort refund ratios

Headline testing rarely measures downstream impact.

CBSplit does.

===== Scaling exposes headline limitations =====

At small scale, headline changes can produce noticeable shifts.

At larger scale:

  
  * Traffic broadens
  * Buyer intent varies
  * Backend stress increases
  * Refund impact magnifies

Headline optimization cannot fix structural weaknesses.

CBSplit focuses on outcome stability under scale.

===== Event-based testing is no longer enough =====

Headline tests optimize events.

Modern revenue systems require:

  
  * Refund-adjusted evaluation
  * Rebill-aware analysis
  * Cohort-based LTV tracking
  * Processor-safe scaling

Headline testing addresses only the first event.

CBSplit addresses the lifecycle.

===== Optimization must move beyond surface elements =====

True optimization now involves:

  
  * Offer structure
  * Billing transparency
  * Upsell sequencing
  * Payment logic
  * Post-purchase alignment

Headlines are part of the system.

They are not the system.