Do you really think they would invest this much R&D, yet somehow never thought to consider the cost or efficiency advantages of piping natural light? I'm no ex

Do you really think they would invest this much R&D, yet somehow never thought to consider the cost or efficiency advantages of piping natural light? I'm no expert but lighting has gotten a lot more efficient recently: http://www.designrecycleinc.com/led%20comp%20chart.html http://www.designrecycleinc.com/led%20comp%20chart.html LEDs are also well suited to farming because you can tune their output spectrum: http://www.lighting.philips.com/main/products/horticulture/city-farming.html http://www.lighting.philips.com/main/products/horticulture/c...