Healthcare still has low hanging fruit, although you have to deal with a lot of bullshit. In fact, the bullshit is why there is still low hanging fruit.<p>I do not think there is low hanging fruit in energy. The astonishing story is just how long it takes for things to develop: i.e. shale gas was known about in the 1970s, the Molten Salt Reactor was expected to take 30 years to get to market in the 1970s if it was funded (and I got boos at a Thorium conference a few years ago when I took their timeline and reset it to the present.) The first hot dry rock geothermal well was drilled in... the 1970s, and they are just talking about the second now, etc.