When I was getting back into skiing 4 years ago, I was chatting on ski forums and watching ski videos before my first season back. Trying to learn all I could after about 15-20 years off.
The main thing I heard was that you no longer want to strive to ski with your skis right next to each other, "about" a foot apart or shoulders with apart was the "new" correct way.
After what I have seen in 4.5 seasons, nearly 150 days at a handful of different resorts, I don't agree with that at all. If you are (stuck) on the groomers, and want to carve, then that makes sense, and carving can be fun. But anywhere else (steeps, bumps, off piste & pow) that doesn't hold true. The best skiers I see, for the most part, ski with their skis right next to each other.
I have heard others say, "that is a crutch", and you should learn to ski with your skis apart and control each ski independently. IMHO, it takes as much or more skill to work them as one.
I guess I am just curious what others think about this.