看了李永樂老師 跟一些台灣科普人士
某陸生傳給我 這幾年有越來越多人都在大陸跟台灣考公職 不要去社會上私人企業競爭高薪累得跟狗一樣 寧願有分鐵飯碗安穩
某海外博士生說讀書很苦 說他現在要安穩
Your partner may come up with a dozen excuses to say "Not tonight, dear, I have a ____," but how many reasons can the two of you name for wanting to have sex?
One? Two? Twenty? How about 200? Some college students have cited as many as 237 different reasons for having sex.
From pleasure to procreation, insecurity to inquisitiveness -- today's reasons for taking a roll in the hay seem to vary as much as the terms for the deed itself. A 2010 Sexuality & Culture review of sex motivation studies states that people are offering "far more reasons for choosing to engage in sexual activity than in former times." And we're doing it more often too. It’s a stark contrast from historical assumptions, which cited only three sexual motives: To make babies, to feel good, or because you're in love.
Today, sexual behaviors seem to have taken on many different psychological, social, cultural, even religious meanings. Yet, some sexologists say, at the most basic level, there is only one true reason people seek sex.
"We are programmed to do so," sex therapist Richard A. Carroll, associate Northwestern University psychiatry and behavioral sciences professor says. "Asking why people have sex is akin to asking why we eat. Our brains are designed to motivate us toward that behavior."
The idea that humans are hard-wired for sex reflects an evolutionary perspective, according to University of Hawaii psychology professor Elaine Hatfield. "Evolutionary theorists point out that a desire for sexual relations is 'wired in' in order to promote species survival," she says. "Cultural theorists tend to focus on the cultural and personal reasons people have (or avoid) sex. Cultures differ markedly in what are considered to be 'appropriate' reasons for having or avoiding sex."
Why do you seek sex? Motivations generally fall into four main categories, according to psychologists at UT-Austin who asked more than 1,500 undergraduate college students about their sexual attitudes and experiences:
看了李永樂老師 跟一些台灣科普人士 講黎曼猜想 為何重要 跟質數的關係 發現大家都是搔搔癢 很多沒講到重點 也沒講到解析延拓的細節 沒講跟質數分布到底是啥關係 我看沒有好的中文影片 我想說自己做一個系列 這是第二集 預計到八月 會出10集 先講Zeta function 解析延拓...
