The best insight is always in the lens you didn't think to check.

You ran the economics. You know the numbers. But the Cultural lens just told you that the communities affected have a distinct identity tied to the landscape you're planning to change — and the story isn't about money anymore. It's about erasure.

Or: you know the ethics. But the Technological lens shows that the infrastructure required for your moral vision creates a surveillance apparatus that undermines it.

The most valuable perspective is the one that's orthogonal to your expertise. Yesbrainer gives you seven lenses precisely so the unexpected one can surprise you.