Sentence 1: Dan was not a very smart kid. 
 Sentence 3: One day he climbed on to his roof and jumped off 
 Sentence 4:  He spread his wings and screamed that he was flying 
 Sentence 5:  Landing with a thud, Dan finally realized he could not fly 
 Option 1: He was practical though and afraid of heights. 
 Option 2: For some reason, he was convinced he could fly.