Left brain vs. right brain thinking is another myth about the brain that seems to be much harder to dispel.
https://en.wikipedia.org/wiki/Lateralization_of_brain_functi...
https://en.wikipedia.org/wiki/Lateralization_of_brain_functi...
> Some popularizations oversimplify the science about lateralization, by presenting the functional differences between hemispheres as being more absolute than is actually the case.[21]: 107 [22]
Sources that wikipedia uses:
[21] Westen D, Burton L, Kowalski K (2006). Psychology : Australian and New Zealand edition. Milton, Qld.: John Wiley & Sons. ISBN 9780470805527.
[22] Toga AW, Thompson PM (January 2003). "Mapping brain asymmetry". Nature Reviews. Neuroscience. 4 (1): 37–48. doi:10.1038/nrn1009. PMID 12511860. S2CID 15867592.
Both have the issue that the popular interpretation of them are great oversimplifications of models that themselves do seem to have some limited use in neuroscience, but only if you add enough caveats.
So unlike the situation with, say, flat earthers, there's some kernel of truth to it that can be misinterpreted or willfully presented in a misleading way.