THANK YOU. Of course it all works perfectly, and I now have my curves which will become lasers. Without geo nodes, the idea is to have a narrow (along the Z axis) slice of a mesh (a character) as a particle emitter; lasers move from the empty (a fixed origination point) to each particle for exactly 1 frame. I had the setup done via a tutorial using animation nodes but they crapped out on a 270 frame animation; on frame 113 (0x71) the cubes used to create the thin slice randomly began rendering, blocking the character mesh. The point is to have dancing lasers that 3D print a character. The cubes would render off and on for 1 frame then go invisible again. I could not find a bug reporting system for animation nodes so I had to ditch them.
In this implementation the spheres will move every frame but the empty never will. It’s the origination point for the lasers. But I can get that working.
Thank you, a billion times.