If the engineer doesn't remove the 3rd sensor to match cost expectations of the bean counter, then the bean counter can always find another engineer, fresh out of school, afraid for his job and CV, with no real-world experience, that WILL remove that 3rd sensor if someone yells at him/her or is offered a promotion for his/her "achievements". This new engineer will also cost less to hire than the old experienced engineer.
Yes. But a company with good engineering culture will also have review schemes that the bean counter can't get around without having to remove all the "troublesome" senior engineers who do the reviews.
