Write about "four different ways to make an argument"

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1. Obviousness - e.g., the sky is blue.
2. First principles - e.g., a proof
3. Empirical validation - e.g., experimentally show it to be so
4. Authority - e.g., as previously shown in Smith et al. (2015)

[lintool]

This is related to the notion of "warrants" in "The Craft of Research".

[lintool]

https://daemon.github.io/log.d/write/explore/metaresearch.html