Results tagged “brain” from onegoodmove

Did You Know?

I'm currently reading Why We Make Mistakes: How We Look Without Seeing, Forget Things in Seconds, and Are All Pretty Sure We Are Way Above Average and ran across a couple of items I think you might find of interest. Since so many of you seem to currently be either teachers or students, you may want to consider this argument. He believes, and provides some pretty persuasive evidence that if you are considering changing an answer the odds are two to one that if you change it you will change it from wrong to right. I won't go into much detail, but one of the reasons we are reluctant to change is one of regret. Apparently, we feel worse if we proactively do something and it turns out wrong than if we do nothing with the same result. That sounds right to me. There was another bit of trivia I gleaned from the book that may contain a part of the reason that the home team in sporting events has a higher winning percentage. Studies show that teams that wear black get called with more fouls and that the fouls are considered more severe than teams that wear white. How about that? I haven't finished reading the book yet, but based on what I've read so far I'm giving it a couple of thumbs up.

Kwabena Boahen: Making a computer that works like the brain

An Efficient Machine

I've just started reading Your Brain Is (Almost) Perfect: How We Make Decisions by Read Montague and was so amazed when I read the following that I needed to share it with someone:
The style of computation used by the brain is very different from that of the computers inhabiting our cars, offices, and server rooms. The energy efficiency of operation for the entire human body is staggering. The average hundred-watt lightbulb costs about a penny an hour to run, at average market rates for electricity in the United States in 2005: around ten cents per kilowatt-hour. Go ahead and check you monthly bill. A human being sitting comfortably in a chair consumes energy at a rate of about a hundred watts, roughly equivalent to the average lightbulb! And this consumption is running literally everything—digestion, blood pumping, breathing, mental function, and a myriad of other processes. The brain consumes about a fifth of this rate; therefore, while sitting, the brain costs about a penny every five hours to operate, less than a nickel a day—now, that's an efficient machine.