Final answer:
The assertion that an observant Jew must wait exactly six hours before eating meat after dairy is false. There are variations among different Jewish traditions, with some waiting three hours or even one hour, but the essential practice is separation, not a specific universal time frame.
Step-by-step explanation:
According to the Jewish "law of meat and milk," it is false that an observant Jew must wait six hours before eating meat after consuming dairy. While there are various interpretations and customs among different Jewish communities regarding the separation of meat and dairy, the six-hour time frame is a common practice among some, but it is not a universal standard. For example, some communities hold to waiting three hours, while others wait one hour. The essential practice, derived from the laws God gave to Moses, is to avoid the consumption of meat and dairy together and to wait a certain period of time between eating these two types of food.