But as it will be easier walking wherever Q has traveled before, Q will be much more likely to continue in old paths than to make new ones.

And as the correct direction is the only one that continues for any distance Q will be aided by it much more than by the little short paths that lead in the wrong direction.

Still on the second trial Qs guidance will come essentially from Ps signals.

As P and Q keep up this stunt, the correct path will become better and better formed and Q will gradually come to rely on it more and more and to need Ps signals less and less.

After a certain number of trials it is likely that Q could traverse the distance with no mistakes, utilizing the well-worn pathway as a guide instead of the signals of P.