Came up with the RNA-world hypothesis on my own when reading about the structure and function of ribosomes in middle school.

Decided long ago that there was a conflict between the age of the universe and the existence of improvements in space travel meaning that things such as we would never be able to reach self-replicating interstellar travel. Never came to the conclusion that it meant extinction at all and am still quite confused by people who assume its interstellar metastasis or bust.