Thus if the spherical surface beings are living on a planet of which the solar system occupies only a negligibly small part of the spherical universe, they have no means of determining whether they are living in a finite or in an infinite universe.
to a degree that is negligible; so small or slight that it may be ignored
الواصلة
to a de·gree that I·s negligible; so small or slight that it May be ig·nored