1. Lack of experience: unfamiliarity with new things or tasks, lack of necessary practical experience, resulting in difficulty in flexibly responding when dealing with problems.
2. Fixed thinking patterns: Long established fixed thinking patterns and habits limit innovation and adaptability, making people slow to respond to changes.
3. Lack of knowledge and skills: Insufficient knowledge reserves or unskilled skills in related fields make it difficult to quickly find solutions or flexibly adjust strategies when facing complex or novel problems.