How did the Bible writers know about so many things before scientists?

Christopher came down with chicken pox after spending time in his child’s day care. the chicken pox represents what link in the chain of transmission in this scenario?

What should be changed to make the following sentence true? "the stress model suggests that people with a predisposition for a disorder are more likely to develop the disorder when faced with stress."

Can you receive a shock severe enough to prevent you from releasing the wire from an ordinary outlet with dry hands?