Dark Energy Isn't That Powerful

The two thirds of the energy of the universe is dark energy. Even if we did so know what it was and could harness it, i mean, you would need to sot o, like farm, a huge volume of space just to get a little bit of energy. And also, i don't know how they got those lazers to do that, where they come together at a point and then change direction like that's pretty cool. That violates some laws of physics, right there.