Perhaps he did or did not plagiarize his work, however that does not change the fact he is a remarkable man. I don't believe it, however even if he did, the only thing to do is try to find the real inventor/artist and give them the praise and glory Da Vinci had for many years
Yes their are some other important tools like blending stump, or a certain pencil kit or like a earaser. Some other jobs that requir tools are like a engineer or a mechanic.They require lots of tools like a rench or a crestit rench:)
