I dunno.Except the cat can't be dead and alive at the same time. It's illogical and it's wrong. It either dead or it's alive.
When I grew up and learnt stuff as a kid and a young one, i was deeply fascinated by Quantum Mechanics, and the mysteries it showed us about reality. Now I just don't buy it anymore. I always feared having no "free will", but I'm schooled in natural science, and "pretty much" anything else in this Universe/reality seems totally determined (even chaos), because that's the way stuff works. Cause and effect. If you accept that fact, a fact that you already know and accept as a part of your everyday life, then all the mysterious parts of Quantum Mechanics goes away, like tears in the rain. No, of course information doesn't travel faster that the speed of light, and of course the particles can't be in a superposition. It's only "possible" because physicists are hypnotized by their desire for freedom. Give it up. No consequences in real life, but physics and logic works again.
It's a tough one to swallow, because for a while you're gonna have to learn to accept the fact that your free will is an "illusion". That sounds horrible to most humans including myself, but that's why we don't finish the thought. We should - We would find that it does not matter if everything is determined... You still wake up in the morning choosing to get out of bed, decide which clothes to wear, what to eat, where to go, what to do, and so on. Your life continues just like it always was.
So, why are we then really afraid of loosing Free Willy? Because then we can't really judge anyone some say. I say well, hold me beer. Even in a determined reality, we still need to put murderers to jail because they pose a threat to anyone else. I admit it's all very scary to think about at first, but I promise that once you realize that everything is deterministic, including you and I, then physics becomes "dead simple" again. You'll also rather quickly start wondering why people have even bothered about all this for so long. It's in our genes. We are very competitive. We need the Ego to survive. It's an illusion, but who cares, as long as it's such a "genuine" experience.
It's all quite philosophical, but so is Erwin's cat.
Listen to Sabine. She speaks the facts
Source: https://youtu.be/TI5FMj5D9zU?si=KnRIcX5uqvl_3CKK
I sometimes feel like people who say this are just afrraid that logic and all that might not be as powerful as they'd like it to be. And that a lot of what we think are rules set in stone are in fact just approximations to reality and prone to change if we just develop the right instruments to measure more correctly. Though, looking at the crisis in cosmology, we're still quite a bit away from the point where we actually understand what we are measuring.