Brain's the enemy.

Mary had also taught that the human brain was the most admirable survival device yet produced by evolution. But now her own big brain was urging her to take the polyethylene garment bag from around a red evening dress in her closet, and to wrap it around her head, thus depriving her cells of oxygen.

Before that, her wonderful brain had entrusted a thief at the airport with a suitcase containing all her toilet articles and clothes which would have been suitable for the hotel.

Her colossal thinking machine could be so petty, too. It would not let her go downstairs in her combat fatigues on the grounds that everybody, even though there was practically nobody in the hotel, would find her comical in such a costume. Her brain told her: ‘They’ll laugh at you behind your back, and think you’re crazy and pitiful, and your life is over anyway. You’ve lost your husband and your teaching job, and you don’t have any children or anything else to live for, so just put yourself out of your misery with the garment bag. What could be easier? What could be more painless? What could make more sense?’

Just about every adult human being back then had a brain weighing about three kilogrammes! There was no end to the evil schemes that a thought machine that oversized couldn’t imagine and execute. 

So I raise this question, although there is nobody around to answer it: Can it be doubted that three-kilogramme brains were once nearly fatal defects in the evolution of the human race?

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On the conclusion of species.

El professor Jerison ha estudiat en profunditat l'evolució del cervell humà, i s'ha concentrat, sobretot, en els suposats avantatges d'un cervell molt desenvolupat en relació amb la grandària i el pes corporal. Amb tot, els neuròlegs afirmen que la depressió és una malaltia mental que només afecta els éssers que tenen la capacitat de reflexionar sobre si mateixos i de pensar en el seu passat i el seu futur. És a dir, que només es poden deprimir els humans perquè tenen un cervell gros. En aquest sentit, patim potser un excés de cervell?

Segons el famós psiquiatre britànic Tim Crow, hem de buscar l'origen de l'esquizofrènia en l'evolució dels cervells de majors dimensions. Crow afirma que l'esquizofrènia és el preu que paga l'Homo sapiens per tenir la capacitat del llenguatge. Aquesta idea és sens dubte suggeridora, però per a Jerison l'aspecte interessant és l'engrandiment del cervell, que suposa un nou salt evolutiu, d'una magnitud comparable al que va haver-hi fa 200 milions d'anys, quan en passar de rèptils a mamífers els animals van necessitar l'oïda i l'olfacte, a més de la vista.

«En l'evolució de tots els llinatges d'homínids, de l'australopitec en endavant, en un moment determinat va sorgir la necessitat de posseir un "mapa" més precís del territori que ocupaven, constituït ara per uns quants quilòmetres quadrats, i no solament uns quants metres quadrats, com en el cas del rèptil». Aquesta necessitat d'informació es troba en l'origen de l'engrandiment del cervell humà. Segons Jerison, això degué succeir quan el cervell humà tenia la grandària del d'un ximpanzé o una mica més, i l'evolució cap al llenguatge va venir de la necessitat de conèixer, reconèixer, un territori més extens. I del coneixement, i no pas de la grandària, ve la depressió. Perquè, com afirma Jerison no sense una certa ironia, «quan coneixem millor el món també ens coneixem millor a nosaltres amteixos i quan et coneixes a tu mateix, és molt probable que no t'agradis tant». Així, per a ell, l'esquizofrènia, la depressió, fins i tot els desordres bipolars podrien tenir l'origen en el millor coneixement de nosaltres mateixos. Un fet molt complex i en el qual influeixen multiples factors, entre els quals, saber que morirem, la renúncia a la immortalitat que va comportar el canvi del sistema de reproducció. La consciència de la mort ha significat un gran impuls en l'evolució. A excepció de l'home, no hi ha cap animal que la tingui. De manera que, ja ho veieu, quan parlem d'intel·ligència no tot són avantatges.

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Eduard Punset (2008) Per què som com som

Man created God in his own image and likeness, on Halloween.

The gods play games with the fate of men. Not complex ones obviously, because gods lack patience. Cheating is part of the rules. And gods play hard. To lose all believers is, for a god, the end. But a believer who survives the game gains honour and extra belief. Who wins with the most believers, lives.

Believers can include other gods, of course. Gods believe in belief.

There were always many games going on in Dunmanifestin, the abode of die gods on Cori Celesti. It looked, from outside, like a crowded city.* Not all gods lived there, many of them being bound to a particular country or in the case of the smaller ones, even one tree. But it was a Good Address. It was where you hung your metaphysical equivalent of the shiny brass plate, like those small discreet buildings in the smarter areas of major cities which nevertheless appear to house one hundred and fifty lawyers and accountants, presumably on some sort of shelving.

The city's domestic appearance was because, while people are influenced by gods, so gods are influenced by people.

Most gods were people-shaped: people don't have much imagination, on the whole. Even Offler the Crocodile God was only crocodile-headed. Ask people to imagine an annual god and they will, basically, come up with the idea of someone in a really bad mask. Men have been much better at inventing demons, which is why there are so many. 

*Few religions are definite about the size of Heaven, but on the planet Earth the Book of Revelation (ch. XXI, v.l6) gives it as a cube 12,000 furlongs on a side. This is somewhat less than 500,000,000.000,000,000,000 cubic feet. Even allowing that the Heavenly Host and other essential services take up at least two thirds of this spate, this leaves about one million cubic feet of space for each human occupant-assuming that every creature that could be called 'human' is allowed in, and that the human race eventually totals a thousand times the number of humans alive up until now. This is such a generous amount of space that it suggests that room has also been provided for some alien races or - a happy thought - that pets are allowed.

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