At that time, I was a little flustered and sad. I still don’t know why..... This morning, after getting dressed at home, I went out and realized that I didn’t have my wallet. The wallet should have had a few coins in it. Losing it means that I have suffered a certain loss. A wrinkled leather wallet is not an expensive item in itself. The contents are more expensive than the container. So I am a little shocked that I lost my wallet. But I’m not violently upset. The reason is that the money in hand is digitized and stored in the IC card. I carry not only an IC card but also a cash card issued by a bank. What is the position of the symbol? Real or concrete reality is sharply separated from conceptual and abstract concepts. As a result of this clash or competition between the two, we gain a more precise and higher understanding. However, there is a third element between these two isolated items. It’s a symbol. If my cash card or mobile phon...