not that this matters much but
i was a nuclear engineer and am now a doctor (why i am now broke)
i lived in hawaii but struggled with flip flops.
i don't have to know what wavelength of light is coming off my truck to know i love the old gray mare
i know that if i prime my lawnmower 3 times it will start if i prime it twice most times it won't (and i am a poor beer judge but i still enjoy a cold bud after mowing the lawn)
some people have good results with fly sparging, some with batch
as presented the information is helpful so that most of us can experiment and find out what works on our own brew