If you're cherry picking results from an objective process, that selection overrides the objectivity of the underlying process.

"I'm being data driven, using the output of this objective process."

"Yeah, but you're cherry-picking the 1% of signal out of the process's output that confirms your priors..."

It's OK to use your judgment to select examples, but you'll tend to pick things that already support your priors.

When there's a lot of diverse output to choose from objective processes, there's a lot of opportunity to find disconfirming evidence and learn.

... But there's also a much broader field to cherry pick from, making this cherry picking effect even stronger.