I also noticed an inconsistency in the first chapter. The book is called "Welcome to Earth" and somewhere, I say that humans would fear you and would very possibly try to test your invincibility with weapons. In no way do I wish to bring harm to you. The idea is that humanity is in a critical situation. The majority of humans are unaware of the aliens and, if faced with them, would panic. The avoidance of panic is a huge factor delaying Disclosure and Contact. Humanity is secretly being helped by good aliens, and secretly interfered with by bad aliens. Both good and bad aliens are small in numbers. That is why I am inviting you to come and help us. We are facing a possibility of extinction via internal wars and natural disasters. Humanity needs your help. We are at a very unstable balance and the panic which would be possibly caused by Disclosure may cause a crash of our economy and wars.
What is needed most is the creation of a new alien-aware culture. We need human teachers who will teach humans about aliens. Much is to be learned and much is to be transformed in human culture.