Replacing Paving Stones

Walking down the sidewalk of a street in his childhood town, Boerstra wonders how is it possible that time is not experienced at this place, while having memories about being here before. Contemplating on the mystery and being present, there seems to be no gap in time, time does not even exist.

To find clearance to the phenomenon, he replaces 10 paving stones for new ones. Driving around for two weeks with the old stones in the back of his car deliveres no answer. Nothing happens.
By replacing the new stones for the old again, he hopes to have caused as little damage as possible to reality.