Unless the website isn't showing drownings happening in the same pool 27 times, but hundreds of identically constructed pools then the website is a counterexample showing that drownings happen relatively regularly.
Obviously there are numerous factors, but the primary factor that we don't see more deaths is that lifeguards exist.
Unless the website isn't showing drownings happening in the same pool 27 times, but hundreds of identically constructed pools then the website is a counterexample showing that drownings happen relatively regularly.
Obviously there are numerous factors, but the primary factor that we don't see more deaths is that lifeguards exist.