1) He was very good at languages (at least 5-6 different languages), 2) He was very smart and quick-learners, 3) He had a very board knowledge in wide areas, 3) He was good at organizing different projects and people, 4) His girl friend was an American Communist Party member, 5) Manhattan project would be successful if other was the leader, 6) The first Atomic bomb was so bad (based on current standard) and only 1-2% U235 were used which wasted about 10 tuns of U elements, and millions of millions of U ore.