Update README with roadmap

README.md

@@ -5,3 +5,34 @@
 - All inputs (i.e. building blocks from other sources) are located in
   `inputs/`.
 - All custom code is located in `code/`.
+
+## Questions
+
+Some interesting questions to pose
+
+1. Long-term growth
+   How many unique machines download packages per day, and is the growth linear, exponential, or flattening?
+
+2. Weekly rhythm
+   Does the number of unique downloaders follow a weekly cycle (week-day peaks vs. weekend dips)?
+
+3. Kernel lag
+   On average, how many days elapse between a new kernel being published upstream and the first time it appears in the logs?
+   *(Group kernels by major.minor, compute min(date) per kernel, compare with its official release date.)*
+
+4. Kernel longevity
+   Which kernel versions have the longest total lifespan (first → last appearance) and which ones disappear fastest?
+
+5. Top packages
+   Which five packages have the highest median daily download count across the whole period?
+
+6. Version stickiness
+   For packages with ≥10 versions, what fraction of users stay on the older version at least one week after a newer version becomes
+ available?
+
+7. Big-bang updates
+   Are there days when the total number of package downloads is >3σ above the 30-day rolling mean (indicating a bulk-update campaign)?
+
+8. File-size vs. activity
+   Is there a correlation between the size of the daily JSON snapshot and the number of unique downloaders?
+   *(Large files might mirror repository-wide rebuilds.)*