What do you mean? How is running out of time different from a Fermi gate? Without a gate, why would time run out? The only natural limits are the time limit to

What do you mean? How is running out of time different from a Fermi gate? Without a gate, why would time run out? The only natural limits are the time limit to colonize another planet, then another solar system, before our earth and sun lose their ability to sustain life.