I must respectfully disagree. Not every event can be known in absolute terms, but some can.
Did team A or B win? That is a fact which can be determined absolutely, based on the objective rules of the game, not "oracles". Did Albert Einstein die or is he still alive? That too is a fact with absolute certainty. Science is NOT based on consensus. Scientists rely on consensus in some cases, and when they do it's an approximation, it's theory or hypothesis, not definitive as in repeatable with the same known conditions.
Although math is concrete, its application and how it correlates to reality is open to interpretation.
I've been thinking a lot lately about consciousness. Ultimately each of us interprets our sense data and in that way our view of reality is never objective. However, we conceive of an absolute, objective reality and without that our communication would be impossible and our ability to survive, to learn and adapt to our environment would be fatally impaired. Humanity operates within a shared context, and I guess you could call that a consensus of the interpretation of our senses.
BM has said he believes in the philosophical view known as solipsism, yet he interacts with me, you and everyone as though we are independent and separate entities. So I must question whether he truly does believe in solipsism. Actions follow belief. Thought first, then action, cause and effect.
It's an interesting topic to ponder. Perhaps all that exists is consciousness, and everything is just a manifestation of that. As much as that idea may point to reality not having absolutes, the one absolute that is inherent in that perspective is that consciousness exists. I don't see how that can be denied without using consciousness.
I found
this video to be one of the best explorations I've heard on the topic of consciousness, with minimal metaphysical overtones. Obviously the topic itself is metaphysical, there is no escaping that. What I mean is this video avoids the typical new age and religious conjectures I usually find with this topic.