yes the topic is " what is reality"
and l wanted to mention quantum pyhsics which claims what we perceive as reality may not be a true reality
Well actually anything that happens at a quantum level wouldnt actually change what we perceive as reality. Perceptional reality (as opposed to plain reality) is dependent on what is observably real. Most people cannot in anyway shape or form observe quantum mechanics personally but have rely on those that tell us what everyday things are affected by quantum mechanics. Without special equipment and knowledge quantum mechanics (and most classic physics) is unobservable by the majority of humanity. Now that doesnt deny the real existence of such things it just means that perceptionaly hard to notice.
What we perceive as reality and what is real through out time has been shown to be different in many different cases. Sometimes new knowledge changes our view of reality, but sometimes it changes nothing. So the ultra small workings of the universe for the average person probably isnt going to change the human outlook on reality.
But that isnt to say that what is real isnt important to our existence. We humans once believed all kinds of crazy stuff. But we learned the truth about some of those things and those crazy beliefs slowly faded away. The key here is that we accept what is real at face value. Rejecting what is real because of our limited perception or knowledge doesnt do us any justice.
Myself I believe that reality (not the subjective observation of reality but the true real state of existence) is the only real truth to be after. One could say that I believe in what is real. That is what science is the quest for reality not superstitions nor mere stories. Reality as I have said is what is real. Discoveries in Quantum mechanics doesnt change what is real, it only defines more accurately what is real.
So no I do not hold on to outdated knowledge hoping to preserve such things to the bitter end like how theists do. But I also do not just believe anything that is popular in certain circles. Nor do I just take things on faith. Are there other universes? I dont know and neither does anyone else. AT this point I dont think that it really matters until we gain more knowledge to understand if that is reality. Until then it will reside in the realm of a very educated guess but not actually definitive.