Having said this, ideas about homosexuality are rooted in problematic ideas that were set forth by men in academic power. Homosexuality in general has historically been viewed by 20th century sexologists and psychoanalysts to be a disorder that people must normalize from. Homosexuality from Sigmund Freud's point of view was seen as a pathology in which people were affected by due to disturbances within psychosexual stages. From Freud's theories about homosexuality, some came to the conclusion that homosexuality was something that could be treated. Additionally, Richard von Krafft-Ebing referred to lesbianism as being “incurable” although he still discussed how it could be treated.