A famous foodie in French history has an interesting point: natural foodies are generally medium-sized, with round faces, bright eyes, small foreheads, low noses, full lips, and square chins; people who are born with no mouthful are generally thin and long-faced. His eyes and nose are bigger, no matter what his height, he always gives a feeling of thinness. This view of "gourmet noodles" is also the intuitive impression of most people today about "gourmets. " However, gluttony Although there is an inseparable relationship with obesity, it is not an inevitable cause and effect relationship. Skinny people who know how to eat and eat well can be found everywhere. According to the above statement, which of the following can be introduced? ['Foodies are generally obese.', 'Obese people are generally gluttonous.', 'Some skinny people neither understand nor eat well.', 'Some skinny people know how to eat and eat well.']