How to test eggs for freshness # 1, water bowl method is not totally reliable

After receiving about 30 eggs from a friend, I was instructed to check them for freshness using a deep water bowl, sinking them in water, and observe.... if they totally sink -- they are fresh, if they float -- they are old. How about if they are just tilting? My conclusion was that I would NOT totally trust this method. Watch all videos to better understand this method.