The truth is what we believe it is.
What we believe is our idea. An idea can appear to be true, whether it has evidence or not. An idea can be shared. If two people share an idea about something, they share a truth about that thing. Shared ideas build community, and the bigger the better. Their truth is their idea. It is their reality.
An idea has sensation and behavior. Ideas have consequences. Ideas can be acquired and released. Our reality shapes our life, and our lives. Reality shapes our truth. The truth shapes the world. The truth can be wrong.
The truth can be corrected, if the community lets it, if the community can find a way to survive with the new truth.