I'd hate to be that programmer

So, why is QA and high volume testing crucial to deployment of an application?

Ohio Voting Machines Contained Programming Error That Dropped Votes

The long story is here. The short story, is that a programmer had a logic issue with their code, and when there were high volumes of votes coming in, it would "lose" some of them. So 1+1+1 would sometimes equal 1 vote instead of 3.

So the next time management asks, do we have to do volume and load testing? Refer to this story and ask them if they want to make front page news?