? Every time I see people and things that make mistakes again and again, it must be too easy to correct, and the cost of making mistakes is too low!
? When people are young, the cost of making mistakes is low and they may start all over again. It's best not to make mistakes easily after the age of 30, because the cost of making mistakes has become higher, so learn to make a fortune, learn to sum up, and learn to make a comeback, because the time of life has passed one third, the cost of making mistakes is high, and the probability of making mistakes is reduced!