Historians typically enjoy a stable and predictable work environment, as historical change generally unfolds slowly and steadily. Over time, societies evolve or disintegrate gradually, resembling sediment shifting in a low-flowing river. English history, in particular, is often characterized by its gradual development and infrequent upheavals. However, there are pivotal moments when history changes abruptly and forcefully, leaving a significant impact on culture.

One of these critical turning points is the year 1066, which marked a dramatic shift in England's landscape. This event was not subtle; it brought about rapid and violent change, erasing long-standing cultural elements such as customs, language, and laws. Author Simon Schama, in his book "A History of Britain," emphasizes how such moments disrupt and redefine a nation's identity, illustrating how unpredictable and tumultuous history can be.