1.Our world is developing quickly,quite a lot of old peaple's experiences are useless now. For example , you need to go to city A,and your grandpa tell you immdiately that you can take bus B and some orther informationg that he thinks them as the best way to A.But he don't kown there is a new way can take you to A directly.And then which way you wound those ?So ,how can it become the greatest world wealth.
2.everybody is different from orthers.So everyone's life road is different from orthers'.So,old people's ways are different from ours.they get their esperiences from their life road.and how can we use their experience in our way?So how can it be the greatest wealth?
3.Always obey experiences makes mistakes. this stops us from thinking of our own ways to solve problem.this make us stupid.