"Smart people", really smart?

I doubted after watching smart people (movie). They do not appear to be amusingly clever to me. I was expecting sth witty/sharp thoughts in their lines that show the 'smartness'...An English Professor, a future to be harvard student, a poet who wrote a poem that has been accepted by the New Yorker, a doctor in charge of A&E, smart?!! It really depends how you definie it. They are functional, sarcastic, perhap cynical but I can't say..smart. sorry. Or the title itself meant to be ironic?