2. Logical thinking and causal analysis ability: with a problem, we can find useful conditions, analyze the relationship between known conditions and problems to be solved, find the correlation between them, and then peel off the cocoon;
3. Computational ability: there is a relationship between known parameters and unknown variables, simple mental calculation and complex pen calculation, and more complicated operation with software or hardware tools;
4, language expression ability: under normal circumstances, if others don't understand, explanation is very important, expression is not clear, others don't understand, so the expression ability is strong;
5. Ability to express and explain words: Text explanation is very important, which is what we usually call a paper.