of both epistmelogical and recognitive

1.How could we believe in those we are able to prove to be fallible?

2.How could we reason what we believe in to be fallible?

3.Is it psychologically possible for a person willing to prove what he believes to be false?

4.If it is 3., what is the motive for people to do this? Or it just happens coincidently?

5.If it is not 3., how is there any revolution of ideas?

I don't think much of modern ecomonics

Because modern economics is nothing more than model economics.
It provides a reduced principle to explain one single phenomenon,
then keeps adding adherent principles to make that overreduced prime principle work.
Economics was meant to explain the phenomenon, not itself.