One big mistake I’ve made since Hamas attacked Israel is to read Twitter. By the end of the second day of the war, I remembered the most excellent internet advice I’ve ever gotten, “don’t feed the trolls.” The two most maddening statements I’ve read over the past few days are: Jesus was a Palestinian, and Israel destroyed the historical Palestinian state.

Anyone who believes that Jesus was a Palestinian is lousy at arithmetic (my son, who graduated with a degree in applied mathematics, says that calculation isn’t math. It’s arithmetic.

[This canard comes up every time the violence rises in the Middle East. There were no Palestinians in Jesus’ time; there were Judeans, with Roman occupiers and residents and travelers from other states and quasi-states. Jesus was Judean and a Hebrew, not an Arab and certainly not a ‘Palestinian,’ as Jeff points out. — Ed]