(The title of the blog reminded me the late Bob Pease [1] who had the signature, "What's all this XXX stuff, anyhow?" [2] where XXX might be "noise gain", "capacitor leakage"…)

[1] https://en.wikipedia.org/wiki/Bob_Pease

[2] https://www.qsl.net/n9zia/pease/index.html