Thanks for the valuable input @arthur.grafo.
I used the word "reliable" in an objective sense meaning a source which is known to be reliable objectively but still could be corrupted by bad actors once in a while. Reliable but not guaranteed.
For instance Binance is an objectively reliable exchange but they certainly cannot guarantee that they are hack proof.
Hello @devann and @arthur.grafo
As pointed out by @arthur.grafo, reliable, as a word, is widely subjective and can mean different things to different. In my personal opinion, instead of trying to give subjective meaning to well-meaning arguments, using consensus as a base can help solve the debate.
A consensus based protocol that gives a weighted average consideration to all inputs and propagates outputs accordingly can certainly do the trick.
Thanks for the comments.