Pearl Harbor's known readiness culture

Was hubris responsible for allowing the attack on Pearl Harbor to succeed?

Yes, but the deeper failure was an entrenched belief that attack was unlikely, despite the base's Sunday-morning vulnerability being widely recognized.

Alex agrees that hubris contributed to Pearl Harbor's vulnerability, but gives a more specific explanation: a belief that the base would not be attacked. He says the relaxed Sunday routine was widely known and inconsistent with a forward base's responsibilities. He compares that confidence with short-war and wars-of-choice assumptions that permit preparations to be omitted. A participant adds the practical question of whether an unchecked assumption is risking someone else's life.