Originally Posted by Grant Szuveges
1. c4 is theoretically the English Opening, but can also lead to a Reti. 1. Nf3 can lead to a Reti or an English (or quite a few other things) and 1. g3 can lead to both an English or a Reti (or other things too)...
I opened with 1 Nf3 recently, black responded ... f5, so I (mentally) shrugged and we played a Dutch. The first time I've ever played a queen's pawn opening in a serious game.
I was inclined to play a KIA, and 1 Nf3 is one (of many) way into one.