Maybe his thoughts are like a Polaroid separate, and still pictures
Maybe they are pictures of important events both positive and negative.
What we do know is that your dog isn't as good as you are at linking the pictures together in cause and effect. The main reason fir this is that he is not human. He's a different species. Dogs often focus on the wrong variable in a sequence of events.
Here's an example.
I have trained dogs for a living for quite some time and during a meeting of trainers last year a co-trainer told a story of a dog who responded to commands wonderfully, better than any dog she had ever worked with one week yet would cower in fear the very next week. Why? What was going through little spots' mind? One of the other trainers had an idea. Let's spend some time with the person training the dog. Was everything the same week to week? Well no, not exactly. When Spot trained well, the trainer was wearing white tennis shoes. The next week when Spot was afraid, the trainer was wearing different shoes they were black. A little investigation of Spot found he was a rescue dog who was regularly beaten by his former owner with a newspaper. And what did Spot take a picture of while he was being beaten? The owners BLACK SHOES. You want to train Spot? It's easy, use good techniques and remember not to wear Black Shoes. Being a dog and not a human poor little Spot didn't realize that what he should have been afraid of was his ignorant owner with the newspaper and not the shoes he was wearing at the time. But for Spot the White shoes were right in front of his face and that's what he took a picture of. If you want to train a dog or change his behavior you first have to know a little bit about how his mind works. Please take some time to understand these wonderful creatures.