Craft a playful exchange between ChatGPT and DeekSeek, where ChatGPT asks DeepSeek a joke or riddle. The punchline should highlight the unique characteristics or quirks of both models. What did ChatGPT say to the DeepSeek model in a humorous, witty manner?
Calculate the time required for Earth's population to reach 100 million, beginning with a starting population of just 10 men and 10 women, while considering factors such as birth rates, death rates, and potential population growth models. What assumptions would need to be made, and what would the growth trajectory look like over the years?