I have a question.

what is the difference between premise and hypothesis and supposition?

and when to use each of them?

2 Answers 2


Premise: a condition on which a logical argument is based.

Hypothesis: a plausible conjecture or explanation which can be proved or disproved by experimentation.

Supposition: a belief or notion that might be true or accurate, but might not. It can turn out to be false or inaccurate.

  • 1
    Thanks a lot, but please could you edit your answer to contain examples.
    – Mo Haidar
    Apr 28, 2015 at 14:52

To supplement TRomano's response, these are some examples you might consider:

Premise: The Earth moves around the Sun [hard fact].

Hypothesis: Because the Earth moves around the Sun and because we get days and nights, the Earth also rotates in its path. [Needs experimentation to verify, which makes it a hypothesis. Luckily it was already experimented with way back.]

Supposition: The Earth might be absorbed by a dead Sun billions of years into the future [No one knows for sure when, or if it will happen. But we do know the Sun will undergo a supernovae. Whether the Earth will still be around to be absorbed is another story].

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