Hi Saranee. I enjoyed reading your writing because it shows clearly what is the common knowledge. I think you successfully explained what is the common knowledge with using many examples and define with your own word. First, I agree with you, “However, the general information that they received should be similar or almost the same throughout the world”. As you mentioned in the prior sentence, even though everyone is living in different environment, they still get the same idea and have a knowledge of something. Your first example, Albert Einstein, is helping me to understand it better that the common knowledge is something that well known and everyone should have knowledge of it. Furthermore, it is clearer with the example of Disneyland rides
