When starting, software systems are similar to mechanical systems where functionality and changes are fairly predictable. However, with more automation and dynamic interactions, software systems start behaving more like biological systems/ecosystems. This sometimes leads to relatively small things having crazy unintended consequences and large things not quite having as much impact as one would hope. This stems from the full ecosystem and how everything (eventually) has some impact on everything else. With this in mind, there are approaches to solving problems at scale that would not make sense otherwise and some approaches that are detrimental.