WHY DID THE IDF FAIL ON OCT. 7?

A newly published investigative piece in Israel's daily Yedioth Ahronoth recounts the blow by blow failure of Israel's army on that fateful morning. How could a low-tech relatively small terror organization outsmart a high-tech giant with a modern state behind it?
Michael Doran and Gadi Taub discuss the main findings. Evidently, Hamas understood exactly how the IDF operates, while the IDF made erroneous speculations about Hamas's intentions at the expense of studying its MO and its capabilities.