Ok FIRSTLY that bit i posted about Michio Kaku and light sabers WAS NOT theoretical in regards to those physics. Here IS WHAT HE HAVE WITH OUR TECH RIGHT NOW; Plasma Window: A low temperature plasma (below 40,000 degrees F) material contained between NOTHING EXCEPT 2 MAGNETIC FIELDS. Yea it was the size of a quarter and required the electricity of a full suburban block; BUT WE CAN since the LATE 1990s contain plasma between 2 magnetic fields AND NOTHING ELSE. That said plasma window I JUST described could support a full grown elephant or something ridiculous like that WITH OUT becoming deformed and if you could feasibly put that weight on the window at that size. Magnetic Fields can be shaped into nearly any simple geometric base object thanx to parabola based emitter tech WHICH WE HAVE. We have plasma torch cutters for cutting out things like 2" thick depleted uranium TANK ARMOR. We have nano tech printed carbon nanotubes in the form of graphine and a few other crystal latices; all of which are: • incredibly durable (a 1 millimeter coating on a styrofoam coffee cup can make that cup support an adult african elephant) • are incredibly conductive (both store and allow for flow of electricity; so much so that a D cell 9v battery sized crystal would store enough battery power to run a CITY BLOCK for an hour) Draw back: you have to nano print EACH MOLECULE IN THE CRYSTAL. So yea THATS ALL TECHNOLOGY WE HAVE RIGHT THE HECK NOW GUY. If we had : 1) a battery 10x the power storing capacity of the nano printed carbon nanotubes i JUST mentioned 2) and a separate one to act as a crystalline power transformer to amp up the power; WE COULD MAKE LIGHT SABERS RIGHT the blamming heck NOW. The science behind that isnt just theoretical BUT ACTUALLY FIGURED OUT! And that was what i was trying to explain with the Michio Kaku reference.