there is a lot of debate of whether or not consumers/investors are rational. unfortunately, I haven't seen much qualification for what is called a rational consumer.

What are the requirements that must be met for us to conciser a consumer rational?

There is a lot of debate on whether or not consumers and investors are rational. Unfortunately, I haven't seen much qualification for what is called a rational consumer. What are the requirements that must be met for us to consider a consumer to be rational?