Test how many invalid social interactions are around you

Many times we are taught that we cannot just live in our own world. We should go out and communicate more with others, accumulate some connections, and have multiple friends and multiple paths! That’s right, but how many of them are effective in socializing every time they go out for various social engagements? In fact, you can’t see who is sincere to you and who is false to you. Why not do a social test with me to see if there are many invalid social interactions around you?