Speaking very personally and not axiomatically: by refusing to accept "fixes" that aren't fully understood. If that means rejecting the PR "stop using globals

Speaking very personally and not axiomatically: by refusing to accept "fixes" that aren't fully understood. If that means rejecting the PR "stop using globals in $language because that triggers a 'slab allocation' (whatever that is) which stackoverflow says is bad", and instead insisting to your boss that you spend an extra week reading kernel source/stdlib source instead of moving on from the original 2-hour-scoped bug, so be it. The outcome is far more beneficial (for you and for the product/company) in the long term.