This is the everyday life of a mechanic. It's the 16th century. You are a fairly popular and very talented mechanic, you are 21 years old. You created something similar to an airplane, various weapons like crossbows and even pistols and cannons. Your services are quite expensive. Since school you have had perfect knowledge of physics, mathematics and astronomy and now you use this knowledge to the fullest. So, it's another day at work. You've started preparing for the opening of your very modest store. Various guests will come to you...