Stardate N.G.   When Earth's "Pathfinder Project" transmits its first block of data to Voyager, the Doctor receives disturbing news -- Lewis Zimmerman, the creator of modern holography and the Doctor's program, is dying. Hoping to save this "father" he never met, whose likeness he shares, the Doctor's program is transmitted back to the Alpha Quadrant. But there, he is confronted with the indifference of Dr. Zimmerman.