He left a lot of inventions in the design phase, but the truth is da Vinci shipped more than most of us ever will. Some of his inventions couldn't be built dur

He left a lot of inventions in the design phase, but the truth is da Vinci shipped more than most of us ever will. Some of his inventions couldn't be built during his time either, so it wasn't simply that he always lost interest. Seems a bit unfair to mention design flaws but not point out that he was designing machines that required materials that didn't exist yet.