This is the spot where I learned to swim about 25 years ago. One of the 187, 888 lakes in Finland. The water is rather deep and the bottom very muddy, so my father had to improvise. He tied one end of a long leather strap around my torso. As I swam around the pier, he stayed on it and, whenever necessary, pulled upwards just enough to keep me on the surface. Full security combined with minimum direct help (minimum
being synonomous with enough
). Not a bad principle for a parent, really, now that I think about it.