Direction of travel, momentum, is divined for each individual message. Where it’s come from not more important than where it’s going. In straight or curving lines, the energy in it determines the movement, and the environmental resistance. The lubrication that speeds it on or the friction that keeps it back is as important as the starting velocity. Publishing is never instant, but often timely.
Preparations for the launch are managed in big and tiny detail, and the crew is trained for survival and success. At a certain time the point is to get there, wherever, at whatever cost, and can become the satisfaction of mere solipsistic ambitions.
10-9-8-7-6-5-4-3-2-1 – we have lift-off.