There is competitive advantage to taking action quickly.
Long cycle times lead to wasted effort, because it's hard to
understand what data is important until you start to try to use it.
Most importantly, slow cycle times reduce your ability to
learn. Each time you pass through the cycle you learn what
what forms of analysis are valuable and gain a greater
understanding of what the next steps should be. Speed in
learning amplifies the advantage of speed through the cycle.
Thus you need an agile approach with rapid
cycles
Reduce the scope of each cycle so you can run through the
cycle quickly
Use the results of one cycle to decide what to do on the next.