See unspace for a very very good read, I love the second one of the 2 thought experiments. The one called “The Yesterday Experiment.”
Now I wish you ask my few readers that same question but I will just quote it insteade of using my own words.
If I told you that an extremely powerful being created the entire universe sixty minutes ago, and created it as if it had existed for 13.8 or so billion years, when you remember existing yesterday, what are you remembering? Did it really happen?
The answer should be “You’re remembering false memories.” But I clearly remember yesterday. I clearly remember noticing that time was passing and wondering “What if the universe was created 60 minutes ago?” It feels as if there is some external “reality” to these memories. But given the maleability of eyewitness testimony, is that so?