I think that's because memories really are highly compressed, with the average complex memory (of a grand day out, for example) being compressed into at most a paragraph of text's worth of information. Everything else is made up of context.
For example, having no photographic memory, I can remember the general "feel" of the innards of an antique shortwave receiver I used to have as a kid. But almost all of that is context. I know what canned octal base vacuum tubes and big tuning capacitors look like, what sort of components were in the big band selector "sled" (for geeks: This was an NC2-40D) and so on. So I can "zoom in" on the coarse memory by just filling in details that are generic, not specific. And these details may be from different sources than the original memory too.
And so the brain needs to remember - if one is not faceblind, which in fact I am - just the overall geometry of someone's face, and all the other stuff can be filled in as needed (how they look when they smile or are anxious etc.) Compression, compression. We have a lot to learn from nature. Note that a faceblind person does this too, of course - just not with a geometrically exact visualization of that person's face, just one with the correct "feel".
And that's also why synthetic memories can be formed so easily. You really don't have to insert much. The brain infers the rest as needed.
Given the number of neurons, hash collisions are inevitable? /s
Our model of the world, and this includes "memories" is very highly compressed, and extremely lossy. We reconstruct everything from what neurons activate when we recall something, so it can also be like a corrupted zip, where we don't access everything required in the moment. This can be affected by sleep, stress, hormones, etc.
What is quite interesting is when we try and recall something and can't, but the subconscious processing continues and you recall it later.
This of course applies to my (sarcastic) description of women's memory too. A given conversation is compressed to a small amount of memory, a significant part of which is the "feel" of the conversation rather than the actual words. So of course the memory is not word-for-word exact. But, let's just say, a subset of persons, a majority of which may or may not be female, does not acknowledge this and insists that the (reconstructed) sequence of words is exactly what was said 20 years ago.
I went under for 2 different surgeries. One of them I had post surgery complications. Years later, we needed to know the year I had the complications. I remembered the surgery, simply look it up and ta-da I got the date.
Except, my wife thought it was the other surgery. And insisted. I was incredulous and angry. I literally nearly died during the complications. I think I would remember the surgery it was from. And it definitely wasn’t from my vasectomy. I decided to make a stand.
I found the oxygen sensor we purchased for the event. Found to manufacture date. It was after her event. So it was physically impossible have the o2 sensor before her event. Wasn’t good enough. Maybe the date was wrong.
I finally went to the hospital and got the records. I was right. My wife simply could not or would not acknowledge it.
I spent the majority of my marriage being “the forgetful one”. And here was a single case where I was right and she had memory issues. And she could not simply say “oops, I got it wrong”. I began to doubt her memory and thought maybe I was being gaslit sometimes.
It was a very influential event in the course of our marriage. I lost a lot of respect for her and began to wonder what our future would be like.
We were divorced within a year.
Not only this, but other things too. But this was a big part of it.
At the risk of sounding rude, ignorant, and insensitive... did you all get married young? That all sounds a bit narcissistic.
Life is too short to be miserable, and we don't celebrate divorce enough. I'm happy for you both, and hope you are too. It's just as much of a milestone as any other big life event.
I've never been married, but I have noticed some couples get sort of locked into the level of emotional maturity they were at when they got married. I've always assumed it was a lack of new experiences stunting personal growth.
Obviously, similar could be said about me since I've never been married. That too is a lack of experience. Though it is worth pointing out that it's stories like this and my own past relationships that have scared me away. Being emotionally stable and reasonably humble is underrated.
For many, it's an online third space. Cooperating to overcome shared challenges reinforces social ties. The game provides a weekly schedule of activities and new challenges quarterly.
My credentials: I played every expansion (but not every tier) since vanilla with the same group of people. I only stepped away in The War Within after family obligations and time zones got in the way.
It blows my mind that, in the frame of an outside observer, time appears to stop at the event horizon. An observer falling through the horizon (who survived the radiation and tidal forces) would not perceive this.
Assuming they do fall through it. Remember they're about to receive an entire universe lifetime's stellar radiation compressed into a microsecond.
(Which is another reason some people think we might be living inside a black hole. An entire universe of energy released in zero time is literally a Big Bang. It would form into stars and galaxies.)
You would turn into plasma cloud long before getting there. How your specific atoms or parts of them, highly separated across long distances perceive that moment is practically irrelevant
I notice this all of the time on sites with ads. I use AirPods to listen to music on my phone at work. Opening websites on my Mac routinely steals the AirPod connection but plays nothing audible.
In the past year, I ended my Amazon Prime membership and started shopping at Target again for this reason. A few items I do still purchase on Amazon, and that has been eye-opening: Checkout is now a minefield of dark patterns, filled with buttons that would reactivate my Prime membership in one click. Is their goal to drive me away from the service?
> If you hammer a 100GB-1TB heap in steady state with small allocations for, say, a month at 100% CPU, does it eventually do the typical Java thing, where a major compaction takes the process down for seconds or even minutes, or does it just slow down application requests so it can keep up with load?
No. Every garbage collection in Java relocates objects. Compared to malloc, memory fragmentation in long-lived processes is less of a concern. Freelists track only large segments of available memory. The allocator reserves a segment per thread and simply advances a pointer. Small short-lived objects are never visited by the collector. Instead, live siblings are relocated elsewhere before the entire segment is reclaimed.
The above holds true for all of the collectors. The difference is how they deal with concurrent changes to object pointers by the application. Generally, stopping the world uses less net CPU than the memory barriers required by G1GC and ZGC, but most applications are willing to provide more memory and CPU in exchange for shorter pauses.
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