There are plenty of environments where deviating from spec (even when fixing an apparently trivial bug) would not be ok without assessing the situation for pote

There are plenty of environments where deviating from spec (even when fixing an apparently trivial bug) would not be ok without assessing the situation for potential unintended behaviors. High-risk systems where a software bug could result in loss of life - aviation, submarine tech, defense, medical etc. Edit: This is for throwing exceptions on undefined behavior. For unlimited threads I imagine scenarios exist particularly when scalable computing is so popular. Large high traffic web stores such as Amazon/Ebay, financial institutions, etc. Either way, the problem shouldn't be solved by an individual developer on a project making things up as they go - its a problem that probably needs to be defined at a framework layer, and discussed within the team of developers and requirements definers.