Psychology, sociology and theology (and more logys?) was never meant to be sciences. We can blame the enlightenment for that idea, let’s revert them back to renaissance activities
Theology, not so much.
However, because it's basically speculation about unobservable entities, theology completely lacks external validity.
Social sciences can have both.
Science is about constantly evolving via falsification of theories.
You might want to base your definition of what can be science on something different than an unsourced appeal to authority from 300 years ago?