Quantum Theory May Explain Wishful Thinking

explosivejared writes "Humans don't always make the most rational decisions. As studies have shown, even when logic and reasoning point in one direction, sometimes we chose the opposite route, motivated by personal bias or simply 'wishful thinking.' This paradoxical human behavior has resisted explanation by classical decision theory for over a decade. But now, scientists have shown that a quantum probability model can provide a simple explanation for human decision-making — and may eventually help explain the success of human cognition overall."

Comments

Re:Unfortunately I'm a Bit Skeptical

[timster]

I'm not sure you're looking at this the right way. The abstract does not suppose that this phenomenon results from a quantum physics effect, though I don't know if the research does. Rather, the abstract and the linked article are applying the mathematical models behind quantum theory to problems in cognition. The brain could very well compute these results using classical physics.

Re:Unfortunately I'm a Bit Skeptical

[Rich0]

I'm sure I'm not the first to think of this, but I wonder if wishful thinking is just a way of implementing a particular strategy for survivial. What I suggest could be applied to running a business or living in a Darwinian world.

There are a couple of ways to go about survival in a highly competitive enviornment.

The most straightforward is to be better than everybody else at one or more things. If your competitors run at 3-4mph and you can run at 5mph then you're going to be the one that catches the gazalle and has dinner. The problem with this approach is that EVERYBODY is trying to catch that gazelle and EVERYBODY is out on the track every morning trying to run a little faster. If you succeed at all it will only be by a little bit, but a little bit is enough, so I think this is the predominant method of survival.

The other approach is to just try to do something completely differently. Most likely you'll fail and starve and your genes won't be passed on (directly - though your cousin might pass them on), but just maybe you'll succeed. If you do succeed there is a good chance that it won't be just by an incremental margin.

So, if I were designing an ultimate survivor species, I'd have it do a grinding incremental evolution (approach #1) most of the time. However, I'd also have members of the species occassionally take huge risks for a possible huge reward. As long as families are big enough and these risks aren't frequent then even if the odd member of the family dies the genes that convey these tendencies will still be passed on. If a family member gets lucky then it will be at the top of the food chain for generations.

Perhaps wishful thinking is just an artifact of the brain that we call "wishful thinking" when things go wrong, and "creativity" or "innovation" when that crazy idea that everybody knows won't work actually does work?

Randomness is Vital

[TheLazySci-FiAuthor]

This type of decision making might simply be an evolutionarily-selected random seeding.

For example, when running an evolutionary algorithm, it is vital to have randomness seeded into the mix. This allows for the system or algorithm to escape from local maxima.

Douglas Adams had a great quote at the end of one of his last lectures regarding humans' re-invention of everything - nothing is ever 'good enough': http://www.guba.com/watch/3000053272

Perhaps this is all that just random, unpredictable outcomes from a horrendously complex system we call the brain, which has emerged out of a random, unpredictable and horrendously complex universe.

Re:Unfortunately I'm a Bit Skeptical

[Fractal Dice]

I agree. It feels like this sort of headline is going to get people thinking "spooky quantum particle magic" rather than just using some of the same math that is used in quantum mechanics to model how competing reflexes and instincts add up to a decision.

When weighing our decision we have to take into consideration the chance that we misunderstood the rules of the game or that the explanation was a lie and we're being conned. We have all sorts of social reflexes and instincts that compete to overrule any mathematical solution we think we've found. If I read it correctly, it is the way you can model all these competing reactions adding up to a single decision that they are suggesting is similar to a superposition of probabilities you see in physics models.

Then again, I might be wrong. *waffles*

Re:Unfortunately I'm a Bit Skeptical

[mdielmann]

I was thinking the same thing. If everyone does the same thing, this leads to two results, one of which you mentioned. Superiority is going to be an incremental issue, since everyone is racing for the same goal. The second is, it's obvious that that is your goal. For instance, as a prey species, if all the predators are going for speed, I might go for maneuverability. Sure, I can't outrun them, but I can change direction with no speed loss and they have to slow down, loop back, and speed up again. It might give me enough time to get away, or (on a species scale) just not make it profitable for that type of predator to catch me.
Throwing in random variability improves overall success for the species because you have a built-in response to the unusual and the unexpected - you do unusual and unexpected things, too. And your responses might be just what's needed in certain survival circumstances.