Déjà vu: glitches or just psychology? (And does it matter?)

Right, this is going to sound mad, but hear me out. I had the most intense déjà vu experience yesterday morning. I was in the staff break room at work, and for about thirty seconds I was ABSOLUTELY CERTAIN I'd lived that exact moment before. Same conversation, same coffee, same weather outside, same everything. It was so vivid I actually asked my colleague if he was repeating himself.

I know the rational explanation: déjà vu is probably your brain mixing up memory encoding, or seeing pattern matches, or temporal lobe weirdness. But here's my question - and I'm genuinely asking - why does the rational explanation matter if the experience is identical either way?

If we're in a simulation, déjà vu could be a literal glitch (code repeating, rendering error, whatever). If we're not, it's psychology. The EXPERIENCE is the same. So what does it mean to ask 'which one is it'?

This might be philosophy rather than paranormal, but I figure you lot think about weird stuff that challenges normal frameworks. Thoughts?

That's actually a genuinely interesting question philosophically. From a simulation standpoint, the 'explanation' matters because different explanations suggest different properties of the simulation. Code glitch implies deliberate design. Psychological artifact implies emergent properties. Very different implications for what 'we' are.

From a materialist standpoint, the distinction matters because understanding the mechanism helps us predict when it'll happen again and maybe prevent it. Utility.

if the experience is identical either way, what does it mean to ask 'which one is it'?

This is actually a really old philosophical question (roughly what Karl Popper was getting at). If two explanations make identical predictions and create identical experiences, they're functionally equivalent. So the 'real' one might not matter for practical purposes.

BUT: one explanation lets you predict future behavior and has testable properties. The other doesn't. So from an epistemological standpoint, they're not actually equivalent.

Simulation theory is interesting but it's become a catch-all explanation for literally everything, which is useless. Every psychological phenomenon becomes 'the simulation is glitching,' which explains nothing and predicts nothing.

The psychology explanation is boring but it's predictive. We can test it, refine it, build models. The simulation explanation just... stops. You can't do anything with it.

You're describing the hard problem of consciousness basically. And yeah, maybe the distinction IS meaningless if the experience is identical. But it matters psychologically - if I think I'm glitching, I feel differently than if I think my brain is doing normal brain stuff. The placebo effect proves that believed reality affects actual experience.

So even if they're 'the same' metaphysically, they're different phenomenologically.