Maybe if they live round the corner from eachother........... Other than that its true, people are the best archive you could hope for, if you know 10 people that have been growing 5 years each then you have 50 years of growing experiences to share together, in people like bricktops case he probably has thousands of collective years experience and knows what the fuck hes on about. Also yes you can grow in hundreds of different scenarios, CFL's for instance... I personally dont think there worth a toss unless you have over 500 watts, yea they work but if a copper kicked your door off if would make no difference what light you have