Last night I had a vivid dream about my elementary school teacher from like 20 years ago, someone I literally never think about anymore. It got me wondering - how does my brain even store and randomly pull up memories of people I haven't seen or considered in decades? Does this happen to everyone or am I just weird?
Your brain stores way more information than you actively use, and dreams pull from that entire archive kind of randomly - it's totally normal and happens to everyone. During REM sleep your brain is basically shuffling through stored memories without the usual logical filters that keep you focused on what matters day-to-day, so someone you haven't thought about in two decades suddenly surfaces. There's no real rhyme or reason to which memories pop up; it could be triggered by something you encountered recently that your conscious mind didn't even register, or just random neural activity firing in patterns that activate old files. The creepy vivid clarity of it makes it feel significant, but it's really just how dreams work - your brain being a messy filing cabinet that doesn't throw anything away.
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