They also do it step by step. The true solution to the three body problem would be nine closed form equations that would specify every future x, y and z coordinate for all three bodies for all future values of time.
“They also do it step by step...”
Can Niagara Falls be used as an example?
“The true solution to the three body problem would be nine closed form equations that would specify every future x, y and z coordinate for all three bodies for all future values of time.”
Only there is no closed form solution.