1.The attorneys for the prosecution were not able to establish beyond a reasonable doubt that Hinckley was sane when he fired at President Reagan. We know this because Hinckley's own lawyers declared that at the end of the trial. So, we have no choice but to conclude that he was insane.
Answer: Hasty Generalization
2. Some regular churchgoers believe that taxpayers' dollars should not be used to fund laboratories that carry out tests on animals for medical research. Hence, it is wrong to go on spending taxpayers' dollars for that purpose.
Answer: Appeal to unqualified authority
3. The Internet is a great technological advance and is available to many people. Space travel is another great technological advance. Thus space travel is available to many people.
Answer: Appeal to ignorance
4. There is no extraterrestrial life. After all, no one has ever found observable data to support the claim that such life exists.
answer: Appeal to ignorance