I'm sorry for writing here mostly about erotic topics.
Today, my senior researcher told me that a graduated researcher was(is?) earnest in having sexual intercourse. He takes an absurd way to have sexual intercourse. He sends a mail "Shall we have sexual intercourse?" to females whom he met for the first time.
My senior researcher was surprised at the direct way. But, the graduated researcher says "Even if I would like to make a female motivated to have sexual intercourse with me for a long span, it'll fail. And, the result is not controllable. Rather than that, I had better send a mail to many kinds of girls."
According to my senior researcher, there are more females who grew desperate to allow any male to have sexual intercourse with themselves than we expect.
But, unlike with the graduated researcher, my senior researcher never have sexual intercourse without using a condom. It is because females who allow him to have sexual intercourse with him are likely to be infected with AIDS.
Anyway, it is difficult to have sexual intercourse with healthy females.
