He aided in the discovery of the cog and gear system, which later added into the creation of machinery in the Industrial revolution.
His flying machines gave a new perspective to engineering.
A mistake involving the misunderstanding or incorrect application of law with regard to an act or transaction. The defense of mistake of law raises two issues. The first issue occurs where, because of a mistake of law, the defendant did not have the requisite intent to commit a crime.
Here are some: nature, anatomy, linear perspective, realism, blue background (for depth), and <span>individualism (singular people instead of big groups)</span>