"But I'm very happy to work within tight parameters, and when you know you have an actor for two days, and you have to get that work done in two days, that focuses the mind wonderfully"

John Crowley is emphasizing the value of working within tight criteria. He believes that when you have a limited amount of time to finish a job, it can be helpful in assisting you focus and be more productive. He is suggesting that when you understand you have a limited quantity of time to work with an actor, it can help you to be more creative and effective in finishing the job. Crowley is recommending that having a set quantity of time to work with a star can help you to be more productive and imaginative while doing so. He thinks that when you have a restricted amount of time to deal with an actor, it can assist you to focus your mind and be more efficient. By having a set amount of time to deal with an actor, it can help you to be more innovative and efficient in finishing the job.