What is one concept you cannot understand, no matter how hard you try?

[deucher]

For me, many things in life are not clear, and also some people's behavior is not clear. However, the most important thing is that I cannot understand why people steal other people's things and then lie that they did not do it. I still sometimes do not believe that mentally healthy people could do such a thing. I had difficult situations in my life, but I never even thought about taking something from someone else