Sentence examples for is more rigorous from inspiring English sources

In the New York Times article "For Martha Stewart, The Secret Is Routine," Martha's regimen is more rigorous than fussy.

I know which is more rigorous.

The stage is more rigorous.

And it is more rigorous than previous exams.

She believes the virtual school curriculum is more rigorous.

The system is London is more rigorous and transparent than elsewhere in the world.

The minimalists were more rigorous.

There are more rigorous performance standards.

Next year I shall be more rigorous, more organised.

Maybe facilitating subjects are preferred because they are more "rigorous"?

But perhaps intuition can be more rigorous than reason.