Grace goes on a blind date and Jack gives Will swimming lessons.Grace goes on a blind date and Jack gives Will swimming lessons.Grace goes on a blind date and Jack gives Will swimming lessons.
It does not make sense that Will does not know how to swim because in season 3 he was taking scuba diving classes to prepare for a scuba trip with Joe and Larry.
Jack says he has known Will for 17 years which would put their meeting in 1988, but in "Lows in the Mid-Eighties", it's established that they met right before Thanksgiving 1985.