Academic leftists used to be interested in ideas and arguments; much less so today.
Now, the lefties just use name-calling and "Shut up" as debating tools.
As a youth, I used to debate my Conservative friends over beers and/or a little weed. My political evolution from adolescent Lefty to conservatarian began happening when I entered the adult world and learned more about human nature and how it is expressed, in part, through the miracle of markets. My evolution continues, because each year I realize more how precious and rare freedom is, and how dangerous and oppressive the State is.