Does inflation solve the horizon problem

We stress the distinction between 'observed region of the universe' and 'observable region of the universe'. We show that (i) the observable region of the universe could not have evolved out of a causally connected domain in the past, even in inflationary models, and (ii) the homogeneity of CMBR [cosmic microwave background radiation] is due to the fact that the universe is still young. (author)