I think Jorge knows a little more about this then is givin credit for.He has years under his belt and a few books. You dont just write a book of what you think you have to do your homework
I would agree that Jorge probably knows a bit more than he's given credit for in this thread, however that doesn't mean he's right on this one. I can't imagine a 7-gal pot for a 7-month old monster that is huge, it just wouldn't work.... the pot would overturn even when watered fully. I'm sure his guideline is for smaller and younger plants. It simply doesn't work for huge outdoor plants.
As far as books go, I'm a published author of four books(non-cannabis). Two of them I became an expert to write... the other two was more about who I knew, not what I knew. The publisher provided me with most of the technical info. I tell you this not to impress you, but rather to impress upon you that that people probably shouldn't put authors on such high pedestals. We don't deserve it, we're not all experts even when writing technical books. Hard to believe, but that is how many books are published.
I'm not saying that Jorge is in that group, I'm just saying that is the publishing business in general. It is more about what sells than getting the best expert or the most accurate information out. I'm sure Jorge is an expert; I simply disagree with this blanket assertion from him, that's all.
BTW, beautiful avatar!