Instrumentation is a conversation
A product event is useful when a team agrees what it means and what decision it should support. Naming conventions, ownership, and retention definitions are as important as collection.
Insight needs a path to action
Funnels and retention are signals, not conclusions. The value of analytics comes from helping a team choose what to investigate, test, or change next.
Keep the system close to the product
The most useful analytics systems stay understandable to the people making product decisions. Low friction creates better questions and better questions create better products.