The following are some ways to express contempt for someone's abilities in vague language： 1. He, that's it, it seems that in his world, things should operate in the simplest mode, and if it is a little complicated, he is at a loss. 2. This person always looks calm and steady when doing things, but he is only limited to the appearance of being well-behaved on the surface. If he really encounters a key challenge, he is afraid that he will be exposed in his original form. 3. I see him dealing with the problem. His thinking is like being framed by something. He can only walk on a limited number of roads, and it takes a lot of effort to adapt a little bit. 4. His ability is probably to barely cope in the small circle he is familiar with. Once he jumps out of that comfort zone, it's like a fish leaving the water and making a mess. 5. Every time I see him doing things, it always feels like he is completing a task, rather than relying on his true ability to solve it, and the result is often passable. 6. His so-called ability seems to be more dependent on past experience. Once the situation changes slightly, he has no confidence to deal with it. 7. The way this person solves problems feels like elementary school students doing arithmetic. They only use the most conventional methods, and they are confused by slightly technical questions. 8. His ability is like a blunt knife that can only cut cork. When he encounters a slightly harder difficulty, he can only be discouraged.