Bullheadedness used in a sentence

Bullheadedness in a sentence as a noun

> because of bullheadedness in the maintainer who managed that part of the kernel.

I have no idea whether that bullheadedness was natural, or was enhanced or inspired by NSA or its stooges.

"Apart from bullheadedness, this chain also highlights another trait of a good developer.

It's entirely another thing to try to score social points with your callous indifference and blinkered bullheadedness.

Also, that work ethic attitude isn't exactly healthy, just a chimera confusing bullheadedness with productivity.