Why Something Rather Than Nothing?

[Heywood]

Accepting as tentatively true while recognizing it might be otherwise....is essentially an assertion in my opinion.

as·ser·tion/əˈsərSH(ə)n/
noun
a confident and forceful statement of fact or belief.

Your opinion seems to be largely dependent on what will best serve the cause of making you feel like you're winning an argument in the moment that you say it.

If a being says(out loud or during an interior monologue), "I am God".....that is a statement of fact or belief(in this case belief as I have shown). It is an assertion by the definition you have provided. If it is not an assertion....then what is it?

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Accepting as tentatively true while recognizing it might be otherwise....is essentially an assertion in my opinion.

An assertion is the couching of an idea as though it is fact-- i.e. that you are so confident about your idea that you have concluded that it represents reality.

So, if I say, "God created the Universe, and he loves us all," that is an assertion. I didn't say "what if," or "it seems to me," or "Hey, I have this interesting way of thinking about life, what do you think?"

In philosophy assertion is a complicated concept. People write entire papers on what is an assertion. The jist of it is....if it is a statement based on belief....it is an assertion. If it is a statement based on actual knowledge....it is a fact.