i think many people now can say "гик" (borrowed)... Ботаник is someone seriously involved in studies (mostly science, but sometimes in humanities too) and, yes, very often lacking social skills (i'd say "ботаник" is a 20th century term, but 'гик' is a 21st century term). But one has to remember that geeks, nerds, ботаники suddenly appear to have social skills when they gather in companies where only nerds and geeks are present.