The blogpost description as input by me. It's undefined yet, but watch this space.

Age periods based on humanity can be divided into several categories, depending on the context and purpose of the classification. Here are some common age periods based on humanity: Prehistoric Age: This refers to the period before the invention of writing, which is estimated to have occurred around 4000 BCE. Ancient Age: This period is typically defined as the time between the invention of writing and the fall of the Roman Empire in 476 CE. It includes the civilizations of ancient Greece, Rome, Egypt, China, and India, among others. Middle Ages: This period spans from the fall of the Roman Empire to the beginning of the Renaissance in the 14th century. It is often characterized by feudalism, the rise of Christianity, and the spread of Islam. Renaissance: This period began in the 14th century and lasted until the 17th century. It was marked by a renewed interest in classical learning and a flourishing of the arts and sciences. Enlightenment: This period began in the late 17th century and lasted until the late 18th century. It was characterized by a focus on reason, science, and individualism. Industrial Age: This period began in the late 18th century with the advent of the steam engine and lasted until the mid-20th century. It was characterized by the rise of industrialization, urbanization, and mass production. Information Age: This period began in the mid-20th century and continues to the present day. It is marked by the widespread use of digital technology and the Internet, leading to an explosion of information and communication.