You said in your first comment it "devolves into a debate." Now you're saying there is no debate. Poor consistency/word choice also lowers the value of HN discussion.
Person B: yes it is
debate ensues
Person B: I thought you were against debates.
Picard facepalm
You know I dated someone with bipolar disorder once. It went exactly like this. It's funny that HN threads exhibit the same behaviors.