Had Picket's charge succeeded the North would probably have lost the war.
They didnt know that Union forces held two additional hills where artillery could view the field. And on top of that confederate troops walked to the front line--instead of running, which would have cut casualties in half. They might have even won still as Union lines began to crack, but by then they had wasted all their troops.

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"...Follow the crystal star to the pyre of the flame; there exists the dwelling of the spreading fire. The heart of this life rests upon the fate of that place, and what begins there sends a contagion to the rest of the universe.
As long as the fire burns we shall never be free..." (The Shadows of Yavara, Final Reclamation)