I just saw this headline, and it was from a major, respected (I think) newspaper: We are Almost Certainly Living in a Hologram, Experts Think.
Here’s what I think: that’s a load of bollocks.
Computer simulations do not have free will or internal emotions, but I do, and I assume, therefore, that you do, too, being human. Also, we have the fossil record of our own, very organic evolution. So, if it were all a computer simulation it would have to be one that starts with the creation of single celled life on this planet and has been running for billions of years. Occam’s Razor says you can leave out that step, I mean the programming by super intelligent beings from another dimension step, and just assume that we evolved organically.

Picard is Pissed Off, I’m Guessing
The whole ‘the world is a hologram’ nonsense makes for a great science fiction plot (I wouldn’t say the Q episodes were Star Trek’s greatest, but they were certainly among the funniest), and is an interesting hypothesis, but since there is nothing to back it up, and it is so far beyond anything we know that there’s no way we can even find any evidence of it, it’s absurd to state it as a fact, or to say that it’s ‘almost certain.’
We can’t know what’s outside of our universe because we are not outside our universe. That just seems totally obvious to me.
I think the reason people write rubbish like that is the same reason people invented religion in the first place. We want an explanation for our existence, and most people are willing to just accept one, if somebody can make it sound plausible. The genius programmer from a universe that dwarfs our own is just another way of saying God, andit’s so unnecessary.
When it comes to the big issues, the meaning of life, the universe and everything, it’s important to remember this: we do not know.