[overlordalex]

It will be harder to dispel because the underlying general assumption actually is true - in most people the brain does split some functions by hemisphere, but rather it's not a general statement that can be simply applied:

> 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.