There are some ways to test it though. For the past 15 minutes I&#x27;ve been taking &quot;photographs&quot; of people in this coffeeshop in my mind, closing my eyes, and trying to read details from that photograph. I take in a lot of detail but part of it is reconstructed. Like I remembered the guy had a green trilby hat, and my brain did a Google Image Search for &quot;green trilby&quot; and pasted it on the guy. When I opened my eyes, I saw it was actually a green <i>plaid</i> trilby. But in my mind&#x27;s eye the image was realistic, even though I obviously hadn&#x27;t truly seen it.