So many people don’t bring data to their retrospectives. What happens in a retrospective without data?
A lot of the time, people end up presenting their perception of the facts as the absolute truth, because it feels real to them! This is not deceptive behavior … everyone experiences the world differently and their version of the facts feels real to them. But without a common set of data, it is hard to find out what is objectively true vs. what is subjective reality.