Where’s my Lightsaber?

Why don’t we have lightsabers yet? Seems like almost 40 years (WHOA) is enough time to figure out something from a sci fi medium. I mean we had those flip phones int he 90’s after Star Trek. This is a question that bugs a lot of people, and I think I will let Dr. Michio Kaku give his explanation and timetable for his own design…

Fascinating stuff. I still think there’s room to improve though…