If the difference is between inference from surface features vs. internal structure, then yes of course in either case unless you have a very strong theory, you will probably do better to combine many weak theories. When looking at surface features, look at many different features, not just one.
If the difference is between inference from surface features vs. internal structure, then yes of course in either case unless you have a very strong theory, you will probably do better to combine many weak theories. When looking at surface features, look at many different features, not just one.