Among the marketing propaganda focuses of paid knowledge, the most attractive is the effective use of fragmented time, such as learning and improving self while waiting for buses, running, and then effectively managing time. Although this fragmented learning method looks at It seems very flexible and can improve the time utilization rate, but scientific research shows that it can't really let you absorb the learned knowledge, which is not in line with the operation mechanism of the brain to absorb knowledge. Those golden sentences that make you wonder, those that make you 醍醐The moment of initiation will be forgotten in a few days, not to mention the internalization and transfer of knowledge. Just as fast food is delicious and full, it does not mean that it is nutritious. The text is intended to emphasize:. ['The future of paid knowledge is not clear.', 'The propaganda direction of paid knowledge is not true.', 'Learning is a long and arduous process.', 'The "fragmented learning" approach is not ideal.']