Well, good buddy, you know nothing--absolutely nothing--by personal, verified experience, nothing you can truly state as a "Fact."

Do you measure the temperature every day, or do you read it in the newspaper, or on TV, or the Internet?

Do you do your own polling, personally, or accept the work of others?

When you hear an opinion, whether good or bad in your eyes, do you accept it, or reject it, or verify it by personal and verified experience?

Bullshit.

You accept what you read, what you hear, what you want to believe, and anything such as Truth is just 'fake news.'

My point is that 99% of all you know is opinion, someone else's opinion, textbooks, dictionaries, books and magazines, bar talk, the internet and so on. You couldn't possible verify personally all your knowledge.

If you had a Ph.D in a subject, 99% of all you know about that subject is Still OPINION--someone else's opinion.

It's a universal fact.

You can't deny climate change. You didn't take the ice samples at the poles, or measure carbon dioxide in the atmosphere, take ten thousand temperature readings in the various oceans of the world--even with a Ph.D, you accept that information from others and work from that.

Tell me six things you absolutely KNOW as indisputable fact, that You Measured, Collected, Quantified, and Now Accept, and Present to yourself and to the world AS FACT!

No my friend, you live--as we all do--on someone else's information, and which sources you accept, whose word is good for you, and what confirmation you have about it--you are still prisoner to someone else's opinions, and how you choose your sources, and who you trust is critical to an informed life.

And your answer is simply to deny what you don't wish to believe, what is uncomfortable, what doesn't fit your dreams, and that ain't honest, ain't satisfactory, ain't right, and don't get you nowhere, never, and forever.

You just fool the easiest person there is in the world to fool--happens every day--yourself.