Yes, it is difficult and it is stunning. On the other hand, in theory, you can go to an engineering school and learn the calculations and design involved in mak

Yes, it is difficult and it is stunning. On the other hand, in theory, you can go to an engineering school and learn the calculations and design involved in making sure it works. Also, it has been done like 80 years ago with the V2 with at best mechanical calculators, without most of the materials we can use today, without 3D printing, without simulations etc.