Santa walked into the workshop to find Mrs. Claus and Bernard arguing.

Santa walked into the workshop to find Mrs. Claus and Bernard arguing.
“The red button feels more Christmas-y!” Bernard said.
“But the green button converts better,” Mrs. Claus replied.
"What does the data say?" Santa asked.
Mrs. Claus showed the results from 1,000 visitors each:
“The data wins,” Santa concluded.
“But red is Christmas-y!” Bernard insisted.
“Bernard,” Santa said, “the kids like green, and that’s what matters.”
He turned to Mrs. Claus. “What else are we testing?”
Mrs. Claus said, “You can’t trust your gut. You have to test.”
She showed Santa how often his instincts were wrong:
Santa's Assumptions vs. Test Results:
"Half of your assumptions were wrong," Mrs. Claus said. "And the only way we knew was by testing."
Santa stared at the list. "I've been doing this for 300 years. How could I be wrong about so much?"
"Because what worked 50 years ago doesn't work now. What works for one audience doesn't work for another. And sometimes, things that seem right are actually wrong."
"So what do we do?"
"We test everything."
"Show me what we've tested so far," Santa said.
Mrs. Claus pulled up the testing log:
Winner: Variation (+21% CTR)
Learning: Casual, action-oriented language works better.
Winner: Control (picture hurt conversion –19%)
Learning: Kids don’t need to see Santa—they know him already. The photo just distracted them.
Winner: Control (+52% higher completion)
Learning: Too many questions overwhelms kids. Simple wins.
Winner: Green
Learning: Brand colors don’t predict performance. Always test.
Winner: Variation (+15%)
Learning: Kids follow what other kids do.
Winner: Control (+29%)
Learning: Timing matters. Let kids finish the main task before offering extras.
Winner: Variation (+42%)
Learning: Real, authentic deadlines boost action.
Santa stood at the window, watching Bernard run another test in the workshop, this time testing different reindeer flight routes for efficiency.
"A month ago," Santa said, "I thought I knew what worked. 300 years of experience."
"And now?" Mrs. Claus prompted.
"Now I know I don't know. And that's okay. Because we test. We measure. We learn. We improve."
He turned back to her. "Every assumption I had, we questioned. Every element of the experience, we optimized. And we're 458% better because of it."
"And you'll be even better next year," Mrs. Claus said. "Because you'll keep testing"
"I'll keep testing," Santa confirmed. "Even the reindeer routes."