Traditional pragmatism is the view that ideas should be judged by the difference they make in lived experience. Pragmatism tends to be used for making specific decisions based on practical value. In William James’ version, beliefs matter by their “cash value” in life — the real difference they make when someone actually lives by them. That’s its power and danger.
In TST, pragmatism is used at the worldview level. Your lens to the world for viewing, sorting, and navigating the world. Pragmatism is your worldview’s calibration system: how you evaluate claims, manage uncertainty, and decide what deserves to guide action.
Your worldview is your lens of the world. Your identity is your lens looking at the self. Pragmatism is your operating lens used to calibrate strength of belief.
We are all pragmatic in our own way, and TST identifies three broad types: Empirical, Rational, and Irrational. In empirical pragmatic mode, a person tries to hold only empirical and rational claims as true, irrational claims are held as false. In rational pragmatic mode, you hold some defined personal irrational-category beliefs, especially family religion and a few adopted claims. In irrational pragmatic mode, unverified or even disproven beliefs are allowed to guide life because they are useful, comforting, or identity-forming. The irrational pragmatist tends to override public truth, often drifting toward the relativistic view that truth is personal. They tend to say things like, “Truth isn’t truth”, or “There’s no such thing as truth.”
Pragmatism asks how tightly your beliefs are tied to public evidence.
For example, an empirical pragmatist might remain an explorative agnostic about string theory. They find the idea fascinating and worth following, but they withhold certainty because the evidence is incomplete. A rational pragmatist accepts public truth while also keeping a family religion as a personal tradition.