As valuable as that diversion no doubt was for you, we still haven't established from your data sources how many people are involved in R&D in a hobby/pleasure/necessity capacity and how that compares to those who have chosen to dedicate their lives towards it.
If it is not in the data, you can say so, but it becomes impossible to know how the average person performs in R&D without it. Which then returns us to the original question: "Based on what?"
