Because it is difficult to learn and not just medical knowledge but also knowledge in subjects with such technology, physics, mathematics, and technology (C programming language).
Because it is difficult to learn and use knowledge not only medical, but also must have knowledge about subjects such as physics, mathematics, technology. And Technology (programming language C).
Because it is study hard and not only use knowledge of medicine but still only have knowledge of technology. Such as physics, mathematics, and Technology (programming language C).