Or potentially a concurrency bug trigger? "One in 1000 times X takes a bit too long and causes problem Y; I'll make X take minimum 5 seconds so I can trigger Y

Or potentially a concurrency bug trigger? "One in 1000 times X takes a bit too long and causes problem Y; I'll make X take minimum 5 seconds so I can trigger Y reliably." Then fixes Y but forgets to remove the delay.