Every trust decision depends on evidence, and the real question is where that evidence comes from. Today, every organisation gathers and validates its own information before making a decision — even when another trusted organisation has already completed the same work. That duplication is not just expensive. It prevents trust from becoming reusable and cumulative.
Authoritative about a narrow scope
The answer is not for one organisation to know everything. It is for trusted organisations to be authoritative about the things they already know: a bank can confirm your account, a university can confirm your qualifications, a mobile network can confirm control of a phone number and, where appropriate, its location, and a government agency can confirm an identity or property ownership. Each is authoritative about a narrow set of facts, and nothing beyond them — your bank cannot verify your degree, and your university cannot verify your salary. That limitation is precisely what makes them trustworthy.
Not another identity provider
A Trust Authority is not another identity provider. It is an organisation whose assertions, within a clearly defined scope, can be relied upon by others without repeating the same verification process. The internet already works this way — when a browser connects securely to a website, it relies on Certificate Authorities operating under shared governance and common standards, rather than independently verifying every website itself. The same principle can extend beyond websites: if trust can be established once by an appropriate authority, it can be relied upon many times without rebuilding the same decision.