I think what this discussion can be boiled down to (or sous vided in 12 hours ) is the whether what is technically possible makes a significant and positive difference in the food experience. I can soft boil and egg with set whites. The yolk will be creamy with perhaps some of the edge of the yolk more firmly set. I can do this in a short period of time. Is this a less satisfactory culinary result? It may not be a technical tour de force, but it is fine eating. I have not eaten sous vide brisket, beef chuck, or ox tails so I can't comment on how they would taste cooked rare. I have had sous vide medium rare pork shoulder. I would not trade it for my 24 hour slow roasted pork shoulder. Just because something can be cooked and eaten rare doesn't mean that it should be. I do love a good rare or medium rare steak that can be done quite nicely in a cast iron pan. I see sous vide being useful in restaurants. I'm waiting to be convinced for home use.