Fact, Fiction and the Gray (do "Facts" actually exist?)

As seemingly important to life as they are, "TRUTH"/"FACTS" are absolutely subjective to me and my life and what is for me a "FACT."
I know this goes against the norm, the standard of our modern as well as it would be to an archaic life, but that doesn't make it "wrong" or any less of FACT to me.
Now, to say statically something is mostly factual, then you are approaching the validity of even a "statistical fact's" validity is only a representation of the size and completeness of the data-set utilized and how those data points are used to come up with an Educated conclusion.
2 + 2 = 4 seems pretty factual and concrete but you need to ensure the intelligence of your question posed. 2 camels plus 2 camels equals 4 camels, but if one is pregnant or the 2 added completes the process needed to enact a pregnancy than 2 + 2 could well equal a million camels. If one has a malady unobserved, 4 can become 3 in an instance. Or zero if a rock falls from space obliterates them and you. There is not black and white there is only gray and fluidity.
This is why "42" is the answer to the life, universe and everything. It is 100% correct for a question when observed, but if you don't know what question to ask you absolutely will see it as 100% false or crazy.
I have tried to keep this very short and sweet because I very much want to find what you think in your conglomeration of facts that got you here and now.
Can you please give me one example of a "FACT" that you feel is irrefutable? I have been racking my couple pound soft, gooey mess I use to figure answers, I simply am thus far unable. I may well be asking the wrong question.

Good luck out there
Robert Peters