Stanislavski was worried that actors would become distracted by the audience. However he did not want them to forget about the audience entirely, because they were a vital part of the performance. On stage, it was common for actors to lose their sense of natural psycho-physical union as they can be under a lot of pressure, when performing in front of thousands of people. Therefore, I feel it could be difficult to balance the concentration on the stage with the appropriate level of awareness of the audience as the actor needs to maintain a natural flowing performance, while still considering the aim of the character and purpose they need to show the audience. Plus, I think it would be difficult because the actor needs to require a lot of concentration
