[qznc]

If you drop the assumptions that you can forecast or plan, you can only do small steps "interactively". So invest no effort into planning but think about the last days and change something so you will make better decisions tomorrow. For example, have real time metrics so you can quickly observe the impact of deployed changes.

People like Ackoff are discussing healthcare and education systems. As a software developer I find I can't learn much about agility/velocity there.

"Retrospective" does not suggest anything about the delay. Could be a manager who comes up with 20yo war stories all the time. I rather believe it is about tight feedback loops and "interactive" captures that quite well.