How can you know what's true?

I had a colleague ask "Where can we go for the facts? I'd pay for truth."

Truth requires FIRST tuning your own radar and thinking skills. Only then can all sources be potentially valuable. They can be evaluated and integrated into your own mental models, ideally updating them to better match reality. Our mental models are ALWAYS at least partially incomplete and wrong, but we can strive to make them more correct.

How do we tune our radar and make our thinking better? How can we know what's true? It starts with you. Tell the truth the best you can (especially to yourself). Accept that we all know a lot less than we think we do (the world is much more nuanced and complex than we ever want to admit). Keep your eyes and mind open so you can regularly update what you think is true. Only then can you begin to trust yourself to discern what's true.

It's not about the source. It's about your ability to evaluate the information.