On a hot summer day, a construction worker enters a mcdonald's fast-food restaurant. he orders the first big mac. he consumes it within 3 minutes. he then orders a second big mac and consumes it in 10 minutes. he eats only half of the third one in 18 minutes and throws away the rest. the store manager offers him the fourth for free. the construction worker says: "no thanks." for the construction worker described above, we can say that __________.