However, the effectiveness of decanting is a topic of debate, with some wine experts such as oenologist Émile Peynaud claiming that the prolonged exposure to oxygen actually diffuses and dissipates more aroma compounds than it stimulates, in contrast to the effects of the smaller scale exposure and immediate release that swirling the wine in a drinker's glass has.  In addition it has been reported that the process of decanting over a period of a few hours does not have the effect of softening tannins. The softening of tannins occurs during the winemaking and oak aging when tannins go through a process of polymerization that can last days or weeks; decanting merely alters the perception of sulfites and other chemical compounds in the wine through oxidation, which can give some drinkers the sense of softer tannins in the wine.  In line with the view that decanting can dissipate aromas, wine expert Kerin O'Keefe prefers to let the wine evolve slowly and naturally in the bottle, by uncorking it a few hours ahead, a practice suggested by wine producers such as Bartolo Mascarello and Franco Biondi Santi . 
Self taught and with a natural visual flair, Monika Lubkowska-Jonas thrives in a busy commercial environment, and creates over 300 new products each year. The foundation of good design is often a thorough knowledge of production processes and this is key to Monika's approach. Understanding techniques of handmade glass and porcelain manufacture and creatively developing their potential, Monika is able to design effectively and imaginatively. The designs Monika creates are marked often by their simplicity and beauty, having a timeless quality. Monika also has an eye on fashion and works with colors and trends, interpreting them to create designs that have a unique yet recognizable feel.