Bob, a college freshman, is telling his new friends that he has been running seriously for 6 years, and can run a marathon in a little over 3 hours. His friends aren’t sure they should believe him,...

Bob, a college freshman, is telling his new friends that he has been running seriously for 6 years, and can run a marathon in a little over 3 hours. His friends aren’t sure they should believe him, but don’t want to spend 3 hours waiting while Bob runs 26 miles. Bob says that he can prove he is telling the truth in 1 minute. Can he? Explain why or why not.