Asia is a very arbitrary definition. A bunch of Westerners decided to put Korean, India, China, Japan,Vietnam, Thailand etc. together and called it - Asia. Chopsticks are a more North-East and South-East Asian thing. read more
Americans know that Asians eat with Chopsticks but Indians do not because they think Indians are not Asians. Non-Americans know that Indians are Asians, but are well aware of the fact that not all Asians eat with Chopsticks. Its only the half Americans that come up with such questions. read more