When you're an investor, you can look at the quantitative and qualitative elements of an investment, but there's a third aspect: What you feel in your gut.
A painstaking course in qualitative and quantitative analysis by John Wing gave me an appreciation of the need for, and beauty of, accurate measurement.
I think the rise of quantitative econometrics and a highly mathematical approach to risk management was the obverse of a decline in interest in financial history.
In the future, I'd like to see paleontology as a whole get a lot more quantitative.
You can use all the quantitative data you can get, but you still have to distrust it and use your own intelligence and judgment.