>Not only has the world moved on drastically from when Feynman...
You're right, social science got even less replicable and less scientific.
>If it exists and has an effect, it can be studied.
Yes, you're right. But that doesn't mean that you can ground it in empirical evidence or effectively apply the scientific method of inquiry. Philosophy is a method of studying human behavior -- it is not, however, science. And for substantially the same set of reasons the social sciences are also not science.
You're right, social science got even less replicable and less scientific.
>If it exists and has an effect, it can be studied.
Yes, you're right. But that doesn't mean that you can ground it in empirical evidence or effectively apply the scientific method of inquiry. Philosophy is a method of studying human behavior -- it is not, however, science. And for substantially the same set of reasons the social sciences are also not science.