Really techno babble? The renowned physicist Michio Kaku (big PhD guy at NASA) says a beam of plasma contained by a magnetic field DOES work and behave as a lightsaber if the magnetic field is strong enough to sustain shape and containment; We cant do it cuz we DONT have an energy source powerful enough AND small enough to do it. (Those magic crystals; are actuated by the power-supply but are themselves a capacitor/amplifier for that power supply) Plasma burns at X temp (40,000-100,000 degrees F - any plasma that burns hotter IS SUPER HEATED PLASMA and is a DIFFERENT MATERIAL) Industrial steel in MODERN 2000s buildings can with stand 400,000 degrees F! Thats not techno babble its ACTUAL PHYSICS also lightsabers DONT cut through anything instantly Plasma due to high electric charge (which is how it is heated) IS HIGHLY MAGNETIC and flows along magnetic lines of Force per Flemings Left Hand Rule of electricity And magnetism