Then results are not really surprising. If you have access to a large body of code the mere ability to query it efficiently and re-use boilerplate or snippets o

Then results are not really surprising. If you have access to a large body of code the mere ability to query it efficiently and re-use boilerplate or snippets of code performing some standard function and/or adding documentation is a productivity booster. Now we know its 8%. Small but measurable. Arguably if you optimise the system to do precisely that rather than pretend to hold civilized conversation you could get quite a bit more bang for you gazillion parameter buck.