evidence: On the morning of Saturday, October 7, the Palestinian group Hamas carried out a surprise attack on Israel on an unprecedented scale: firing thousands of rockets, infiltrating militants into Israeli territory, and taking an unknown number of hostages. At least 100 Israelis have died, and at least 1,400 have been wounded; Israeli Prime Minister Benjamin Netanyahu declared that his country was "at war." As Israeli forces responded, around 200 Palestinians were killed and around 1,600 wounded. [...] This was a total system failure on Israel’s part. The Israelis are accustomed to being able to know exactly what the Palestinians are doing, in detail, from their sophisticated means of spying. They built a very expensive wall between Gaza and the communities on the Israeli side of the border. They had been confident that Hamas was deterred from launching a major attack: they wouldn’t dare, because they would get crushed, because the Palestinians would turn against Hamas for causing another war. And the Israelis believed that Hamas was in a different mode now: focused on a long-term cease-fire in which each side benefited from a live-and-let-live arrangement. Some 19,000 Palestinian workers were going into Israel every day from Gaza, and that was benefiting the economy and was generating tax revenues.