These gravitational waves we will to detect will almost be the size
of visible universe, but we mean, they'll produce
signatures, temperature — well, in this case, the polarization
of the microwave background —
signatures which are at the level, well, the next generation, the best we can imagine doing is getting a 1 [percent]
admixture of a signal from gravitational waves compared to the signal
of the temperature fluctuations that we, kind
of, measure in the universe.