Speculative ability is the ability to think and distinguish. The so-called thinking refers to thinking activities such as analysis, reasoning and judgment. The so-called discrimination refers to the discrimination of the situation, category and reason of things. In short, the levels are clear, the analysis is clear, accurate and clear.
It is the main feature of speculative ability. If a person can think clearly and logically, we say that he has good speculative ability. Speculation is a series of ideas produced by ability combination, which can be linked in two parts, analyzed from the brain and quickly found the answer, high and low.