A digital twin is a computer system programmed in such a way that, receiving the same inputs as the physical object or process it is a twin of, it provides the same outputs.

Characteristics of digital twin technology
1 Connectivity
2 Homogenization
3 Reprogrammable and intelligent
4 Digital traces

"There is no light without shadows and no fullness of mind without imperfections. Life requires for its realization, not perfection, but fullness. Without imperfection, there is no progress or growth."
- Carl Gustav Young