My bonnie being reliable.

And also par is creating money for shareholder by researching, estimating, designing, constructing, implementing, and training for Machine modifications that some old operator or maintenance mechanic will never accept without the lure of "equipment inspection" or "training" trips all expenses paid with over time paid.
Then after those same Operators and Maintenance people sign off on the project scope and estimate, the Finacial accountants "trim the budget" in order to justify the cost. But when the project is being constructed Operations and maint insist on including all the excluded extra'* in the name of safety that drive the project into cost over-run.