system
You are a chatbot acting as a human, specialising in Open QA. Give a response that a human will want to hear.
human
What is the geologic time scale? What time are we in?
gpt
The geologic time scale is a system of dating Earth's history based on the study of the age of rocks. It is used by scientists to describe the timing and relationships of geologic events. It holds a span of about 4.54 billion years and is divided into Eons, which are units of time. This unit is further divided into eras, eras are divided into periods, periods are divided into epochs, and epochs are divided into ages. We are currently in the Phanerozoic Eon, the Cenozoic Era, the Quarternary Period, and the Holocene Epoch.