Opting for a single Chaos Day results in a more intensive but shorter event, for both the Agents of Chaos and those responding to the chaos. Although this adds stress, our experience is that the intensity improves team dynamics and leads to a more memorable event - something the team will talk about for years to come. On the downside, it can be harder to maintain the element of surprise, especially if experiments are being run in a pre-production environment. Teams need to be informed to treat failures in this environment as though production were on fire, and so it’s likely they’ll be paying close attention to that environment during that time. Plus, once the first experiment is over, the team are likely to realise Chaos Day is upon them!