The advantage is that it can reflect the fundamental laws of many things and the essence of things.

The disadvantage is that it is easy to make mistakes of incomplete induction.

Deduction is from general to special.

The advantages are that it is recursive from the definition of the fundamental law, with strict logic and reliable conclusion, which can reflect the characteristics of things.

The disadvantage is that the scope is narrowed, so that the role of the fundamental law can not be fully played.

Induction and deduction are not contradictory in application. Some problems can be solved by the former and some problems can be solved by the latter. More often, the combination of the two can achieve better results.

Deduction?

A method of argument. The characteristic is to demonstrate individual things from the general to the individual, that is, from the general principle as the premise, so as to deduce new conclusions.

The so-called "general principles" include the principles of classical works, recognized scientific principles and definitions, and various well-known aphorisms and aphorisms.

inductive method

Induction is an important method to study classical physics and its theoretical construction. The main tasks to be solved are:

Understand the causal relationship between things and phenomena, so as to pave the way for understanding the laws of physics.

Grasp the essence through phenomena, classify some physical facts (phenomena and processes) into a certain category, and find the dominant regularity.

The way to accomplish this induction task is: on the basis of observation and experiment, through careful investigation of various cases, using a series of logical methods such as comparison, analysis, synthesis, abstraction, generalization, and exploration of causality, to deduce general guesses or assumptions, and then to correct and supplement them through deduction until the general conclusion of physics is finally drawn.