A Drug That Could Give You Perfect Visual Memory
io9.com
io9.com
Really? The brain is one of the most complex organs in the human body. It is also a finite resource. There is a very high probability that increasing performance on one area will have complex side effects in other areas.
"If the drug [does this great thing] and has no destructive side effects, then I can't see much of a downside to it." Well, duh.
However, a decade and a half on the internet is enough to convince me that the ability to let certain visual memories fade into oblivion is a good thing.
http://en.wikipedia.org/wiki/Rimonabant
is an example of a drug that at first sounded like it had no downside, only upside, when it was released, but it has been withdrawn from the market now that its dangerous side effects have been discovered. Rimonabant is not the only recent example like that. The human brain is a very complicated, interacting biochemical system, and drugs that were believed to be harmless have often been shown to have severe psychiatric side effects.
Thanks to the other participants who have already mentioned examples of strong visual memory storage not having fully beneficial effects in actual patients.
http://en.wikipedia.org/wiki/Funes_the_Memorious
"In effect, Funes not only remembered every leaf on every tree of every wood, but even every one of the times he had perceived or imagined it...It was not only difficult for him to understand that the generic term dog embraced so many unlike specimens of differing sizes and different forms; he was disturbed by the fact that a dog at three-fourteen (seen in profile) should have the same name as the dog at three-fifteen (seen from the front)."
Here's a real life example: http://www.telegraph.co.uk/news/newstopics/howaboutthat/1940...
Jill Price:
She described her life as like a split-screen television, with one side showing what she is doing in the present, and the other showing the memories which she cannot hold back.
"Some memories are good and give me a warm, safe feeling.
But I also recall every bad decision, insult and excruciating embarrassment. Over the years it has eaten me up. It has kind of paralysed me."
Many years ago I read about a professional gambler with photographic memory who was unfortunate to be caught in a deadly casino fire. Since the fire, he was unable to enter another casino because he would be flooded with perfectly horrific visuals of the deadly fire.
Amazing that the author of a sci-fi blog would say this; such a drug could feed the premises of a dozen short stories or Twilight Zone episodes -- and many would have dark endings. (Perhaps this was really her intent, to trigger fun scare stories in comment threads.) Examples:
You could remember a good experience so well you spend your whole life trying in vain to reproduce it.
You could remember a bad experience so well it paralyzes you.
Your initial advantage could go through phases of benefit and detriment, ultimately be so isolating you're completely alone, and then be reversed (a little like 'Flowers for Algernon').
There could be an ironic turn (blinded just after gaining perfect visual memory; 'Time Enough at Last').
You could, imperceptibly at first, lose other valuable skills in proportion to the memory gain. Social abilities; judgement; empathy. The irony would be you can't even remember the dimensions of life you've lost -- they're no longer perceptible compared to the eidetic perfection.
Etc, etc...
I come from an extremely forgetful and absentminded family, and so it is a constant struggle to keep 'important' things in the brain. But the benefits of it by far outweigh the drawbacks (which usually come in the form of late fees and only 1 arrest :).
The brain needs to wash things down the drain to make room for new stuff. While medically we might be able to prove this is not damaging, I can only think I'd get a little crazy having so many details in me. How can we say it's not damaging when we know so little about how the brain works?
The flip side is that our current environment is very different than it was even a thousand years ago, and what was disadvantageous then may be an advantage today, but this turns out to be a very tricky determination to make.
Redesigning the human body is hard. Almost by definition, it's already largely in a local optima; presumably it isn't entirely, but finding the path out in the horrifically multidimensional space of possible enhancements is non-trivial, in the dry-mathematician-humor sense of the word "non-trivial".