The first three do no represent technologies based on renewable resources and in-fact are very, very important "loss leaders" for the junkies...I disagree about ocean based bio-fuels.....let's take it as read that fuel and energy use in general needs-must-change and other priorities drive our economy....so ocean -based will not be a panacea or any type of "cure".....one of the benefits of "ocean based" will be to encourage us to support biodiversity and cleanliness (of all kinds), with regards to our seas..."Emergence" is the economic principle we need to espouse...You are missing the point about HADRON (et.al), too..Lockheed Martin (amongst others), invest in particle beam because they hope to cure the energy crisis with fusion bro'.....philosophy determines action not the other way around #wordsmatternotmatterwords #Yoda