The scientific history of finding a clue to the mystery of dinosaur extinct has further proved that hypothesis is a very efficient method in scientific reseaches.It is a “bridge” for establishing new theory and new thinking.It is not an easy job to establish a complete scientific hypothesis system.There are a lot of things for us to learn

including the process

the feature and the mode of thinking.Facing the incompleteness of geological research object and the single mode of geological researches

it is necessary to adopt supposition or inference as precursor.This method could be expressed as:document image/analogythinking in images→supposition(inference)deductive inferenceabstract thinking→question observationtest/simulation→collecting evidence inductive inferenceabstract thinking→new condition thinking in imagesabstract thinking new supposition(inference).This method places emphasis on:(1)adopting the precursor of supposition(inference)

paying attention to the effect of hypothesis(inference)in every thinking process;(2)deriving related question from hypothesis is the most important process.The aim of this is emphasizing the directionality

selectivily and result determinant of thinking;(3)only combining thinking in imagine with abstract thinking can the hypothesis become scientific contribution.