Some of you may ask: "What is visualization???"
So we want to try a short answer here:
Visualization simply means "to make something visible".
This "something" for example can be a product you want to produce in future.
It can be something lost 1000 years ago like archeological findings.
It can also be something our eye can't see like proceedings in space or atomar microcosm or inside of our body.
Whatever you can imagine: We make it visible.