"Hypothesis" is a Chinese word, pronounced as jiǎ shè, which refers to if; to conceive out of thin air; scientists put forward claims to explain events but have not yet proven them. See "Hanshu Jia Yi Biography": "Suppose your Majesty lives in Qihuan, will he not be in harmony with the princes and rule the world?"
The sentence of "suppose":
Suppose there is no sun , humans will not be able to survive.
If we get old, will we also dance square dance like our aunties do now?
If I had not said that, I would not have hurt her.
If I really go, then I lose.
Suppose I cook, will you eat it all?