Summary
This quote suggests that people on a film set tend to maintain a aloof and nonchalant attitude, appearing calm and unaffected by the excitement and pressures of the industry. The term "cool" is used to describe their demeanor, implying a certain detached and relaxed disposition. This may reflect the professionalism and experience of those involved in filmmaking, who have likely become accustomed to the chaos and fast-paced nature of the set, while masking any underlying stress or emotions.