<|im_start|>system
You are a helpful AI assistant.<|im_end|>
<|im_start|>user
Why do vegans and vegetarians usually abandon their diet within three months? Can you offer a solution to people who find vegan or vegetarian diets unsuitable, but still want to avoid unethical animal agriculture?<|im_end|>
<|im_start|>assistant
Based on research, one reason why vegans and vegetarians abandon their diet within three months is due to the lack of variety in their meals and the difficulty in finding suitable plant-based options when dining out or traveling. Additionally, some individuals may not have properly planned and balanced their diets to ensure they are getting all necessary nutrients.

As for ethical alternatives to animal agriculture, there are a few options that could be incorporated into a non-vegan or non-vegetarian diet. One option is to choose products from farms that practice sustainable and humane methods of animal husbandry, such as allowing animals to roam freely and feeding them a natural diet. Another option is to incorporate more plant-based meals into a non-vegan or non-vegetarian diet, such as having a "Meatless Monday" or choosing plant-based protein sources like legumes, nuts, and tofu.

Ultimately, it's important for individuals to do their own research and find what works best for their lifestyle and beliefs. It's possible to avoid unethical animal agriculture without necessarily adhering to a vegan or vegetarian diet.<|im_end|>
<|im_start|>user
Plant based meats! Of course! That's a good solution.<|im_end|>
<|im_start|>assistant
Yes, plant-based meats are a great solution for those who want to avoid consuming animal products while still enjoying a meat-like experience. There are many options available now, including burgers, sausages, chicken nuggets, and more. They are often made from ingredients like soy, pea protein, or wheat gluten and are becoming increasingly popular. Some popular brands include Beyond Meat, Impossible Foods, and Gardein. It's important to note that plant-based meats may not be suitable for everyone, as they can be processed and high in sodium, so it's still important to eat a balanced diet and include whole, unprocessed foods as well.<|im_end|>
<|im_start|>user
What is the oldest calendar?<|im_end|>
<|im_start|>assistant
The oldest calendar **ever discovered** is a Mesolithic monument created by hunter-gatherer societies and dating back to around 8,000 BC, originally excavated in Aberdeenshire, Scotland, by the National Trust for Scotland in 2004. It pre-dates the first formal time-measuring devices known to Man, found in Mesopotamia, by nearly 5,000 years. (Source: University of Birmingham, published July 15, 2013, in the journal _Internet Archaeology_).

The oldest calendar **still in use** is the Jewish calendar, which has been in popular use since the 9th century BC. It is based on biblical calculations that place the creation at 3761 BC. (Source: _Guinness Book of World Records_).<|im_end|>