The best laid schemes

Je viens de regarder un TED talk de Helen Fisher sur la neuropsychologie de la pulsion amoureuse, qu'elle distingue de la pulsion sexuelle et de l'affection. J'y ai trouvé des choses plutôt intéressantes, même si je n'ai pas été entièrement convaincue par certains aspects (à sa décharge, elle n'avait que vingt minutes, et je viens de terminer Le Sexe, l'homme et l'évolution de Picq et Brenot).
Dans la plus pure tradition de ce genre de conférence, elle conclut par une histoire, rapportée donc peut-être fausse.... Ma se non è vero, è bene trovato...

But I want to tell you a story (...). It was a graduate student (...) and this graduate student was madly in love with another graduate student, and she was not in love with him. And they were all at a conference in Beijing.
And he knew from our work that if you go and do something very novel with somebody, you can drive up the dopamine in the brain. And perhaps trigger this brain system for romantic love. 
So he decided he'd put science to work, and he invited this girl to go off on a rickshaw ride with him. And sure enough -- I've never been in one, but apparently they go all around the buses and the trucks and it's crazy and it's noisy and it's exciting. And he figured that this would drive up the dopamine, and she would fall in love with him.
So off they go and she's squealing and squeezing him and laughing and having a wonderful time.
An hour later they get down off of the rickshaw, and she throws her hands up and she says, "Wasn't that wonderful?" ,
"And wasn't that rickshaw driver handsome!"

PS : Je découvre qu'il est possible d'avoir des sous-titres français pour pas mal des vidéos des TED talks, n'hésitez pas à en profiter !
PS2 : Le titre est un hommage à Burns.