“Practical application”, and “Real world”, are what we make it, as Engineers, it all starts with a dream.

If we tried something, like surviving from the energy of the Earth alone, and it doesn’t work, all life going extinct as a result, isn’t it time to admit that it wasn’t a real world that we created?

I think you might be very surprised how quickly we can switch from the wrong path to the right one, it is only a matter of channeling resources.