>I believe what they try to achieve is beyond what we currently have. And if Mises was born in this age, he would've probably go to the biology level or even de

>I believe what they try to achieve is beyond what we currently have. And if Mises was born in this age, he would've probably go to the biology level or even deeper to start his work. This isn't really true. When Human Action was written there already was a fair bit of literature on behavioural psychology and other fields, but Mises made a conscious choice to not base his theories on them. In the first part of Human Action Mises does bring this point up but makes a clear distinction between investigations into human behaviour that are rooted in the natural and empirical sciences (i.e. biology) and his own flavour which is rooted in a Kantian-esque introspection. This concept is referred to in Mises' work as well as in the works of his successors as methodological dualism, and is a core tenet of Austrian social analysis.