Concepts over tools

While it is true that you will be more valued if you can use as many tools, you need to master the concepts before using or mastering the tools. It is the case because the concepts are like light into the understanding, but the tools are ways to do something only. So if you see the light and see that at some place some important object is located you can reach that desired  object. But if you only know the wways of doing something you will lack the sense of what you want to do. So it is important to understand and only after that to pick the ways of realizing whatever you want to make!